Koop, R. (2011). Grassroots Liberals: Organizing for local and national politics. UBC Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKoop, Royce. Grassroots Liberals: Organizing for Local and National Politics. Vancouver [B.C.]: UBC Press, 2011.
एमएलए (9वां संस्करण) प्रशस्ति पत्रKoop, Royce. Grassroots Liberals: Organizing for Local and National Politics. UBC Press, 2011.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.