我在向jss模板添加引用时遇到问题。我没有使用elsevier模板。我也尝试将@reference改为\ cite {references}或\ citep {references}但是？符号出现在引用的位置。我觉得我没有以正确的方式指向.bib文件。我知道我做错了什么？
作为一个例子，我在论文中有以下代码，我试着在最后一段的最后一个单词中引用：
---
author:
- name: Derek Corcoran
affiliation: University of Missouri
address: >
First line
Second line
email: corcoranbarriosd@missouri.edu
url: http://rstudio.com
formatted: "Selecting priority areas from diversity and individual species abundance \\pkg{DiversityOccupancy}"
short: "\\pkg{DiversityOccupancy}: Selecting Priority Areas"
abstract: >
Lately occupancy modeling has been vastly used as a tool for ecological research and management planing. However mostly it is used by interpreting single species models. We present the \pkg{DiversityOccupancy} in the \proglang{R} environment. The objective of this package is to simultaneously model factors associated with occupancy and abundance of individual species using a detection history file, and to use predicted abundances to calculate species diversity for each sampling site. The package then models factor(s) associated with among-site species diversity, which can then be combined with spatial data to identify areas that contain both high abundance of species of conservation concern and high species diversity.
keywords:
# at least one keyword must be supplied
formatted: [ "\\pkg{DiversityOccupancy}", Occupancy Modeling, "\\proglang{R}"]
plain: [keywords, not capitalized, Occupancy modeling]
preamble: >
\usepackage{amsmath}
output:
rticles::jss_article:
citation_package: natbib
bibliography: Derek.bib
---
# Introduction
In the last decade, Occupancy modeling has been used more and more as a
method to account for how species respond to environmental or anthropogenic
factors. It has also been shown to be useful as a species distribution
modeling tool when species have imperfect detection
\cite{mackenzie_estimating_2002}.
在我的.bib文件中，论文的格式如下：
@article{mackenzie_estimating_2002,
title = {Estimating site occupancy rates when detection probabilities are less than one},
volume = {83},
url = {http://www.esajournals.org/doi/abs/10.1890/0012-9658(2002)083%5B2248:ESORWD%5D2.0.CO%3B2},
number = {8},
urldate = {2016-01-13},
journal = {Ecology},
author = {MacKenzie, Darryl I. and Nichols, James D. and Lachman, Gideon B. and Droege, Sam and Andrew Royle, J. and Langtimm, Catherine A.},
year = {2002},
pages = {2248--2255},
file = {[PDF] de uvm.edu:/home/derek/.zotero/zotero/b7w3ygs6.default/zotero/storage/HSJAQTQG/MacKenzie et al. - 2002 - Estimating site occupancy rates when detection pro.pdf:application/pdf;Snapshot:/home/derek/.zotero/zotero/b7w3ygs6.default/zotero/storage/G45M4BNP/abstract.html:text/html}
}