APA-ийн эшлэл(7 дахь хэвлэлт)

Howlett, M., & M.Ramesh , A. P. (2020). Studying Public Policy: Principles and processes. (4 th ed.). Canada.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Howlett, Michael, ба Anthony Perl M.Ramesh. Studying Public Policy: Principles and Processes. 4 th ed. Oxford: Canada, 2020.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Howlett, Michael, ба Anthony Perl M.Ramesh. Studying Public Policy: Principles and Processes. 4 th ed. Canada, 2020.