APA-ийн эшлэл(7 дахь хэвлэлт)

Koop, R. (2011). Grassroots Liberals: Organizing for local and national politics. UBC Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Koop, Royce. Grassroots Liberals: Organizing for Local and National Politics. Vancouver [B.C.]: UBC Press, 2011.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Koop, Royce. Grassroots Liberals: Organizing for Local and National Politics. UBC Press, 2011.