Shull, S. A. (1979). Presidential policy making: An analysis. King's Court Communications Inc.
Čikaški stil citiranja (17. izdanje)Shull, Steven A. Presidential Policy Making: An Analysis. Brunswick, Ohio: King's Court Communications Inc, 1979.
MLA način citiranja (9. izdanje)Shull, Steven A. Presidential Policy Making: An Analysis. King's Court Communications Inc, 1979.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.