APA način citiranja (7. izdanje)
Sangster, A. (2020). Secret services, 1918-1939: Their development in Britain, Germany, and Russia. Cambridge Scholars Publishing.
Čikaški stil citiranja (17. izdanje)
Sangster, Andrew. Secret Services, 1918-1939: Their Development in Britain, Germany, and Russia. Newcastle upon Tyne, England: Cambridge Scholars Publishing, 2020.
MLA način citiranja (9. izdanje)
Sangster, Andrew. Secret Services, 1918-1939: Their Development in Britain, Germany, and Russia. Cambridge Scholars Publishing, 2020.
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