APA-ийн эшлэл(7 дахь хэвлэлт)

Howlett, M. (2009). Studying public policy: Policy cycles & policy subsystems. Oxford University Pr..

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Howlett, Michael. Studying Public Policy: Policy Cycles & Policy Subsystems. Oxford: Oxford University Pr., 2009.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Howlett, Michael. Studying Public Policy: Policy Cycles & Policy Subsystems. Oxford University Pr., 2009.