Collin, J. (2012). The Case against a Smoker's License. Public Library of Science.
Citação norma ChicagoCollin, Jeff. The Case against a Smoker's License. Public Library of Science, 2012.
MLA引文Collin, Jeff. The Case against a Smoker's License. Public Library of Science, 2012.
警告:這些引文格式不一定是100%准確.