APA-ийн эшлэл(7 дахь хэвлэлт)

ebrary, Inc, Tweeten, L. G., & Thompson, S. R. (2002). Agricultural policy for the 21st century. Iowa State Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

ebrary, Inc, Luther G. Tweeten, ба Stanley R. Thompson. Agricultural Policy for the 21st Century. Ames: Iowa State Press, 2002.

MLA -ийн эшлэл (9 дэх хэвлэлт)

ebrary, Inc, et al. Agricultural Policy for the 21st Century. Iowa State Press, 2002.