APA-ийн эшлэл(7 дахь хэвлэлт)

Sommer, R. (1997). A practical guide to behavioral research: Tools and techniques (4th ed.). OUP.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Sommer, Robert. A Practical Guide to Behavioral Research: Tools and Techniques. 4th ed. New York: OUP, 1997.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Sommer, Robert. A Practical Guide to Behavioral Research: Tools and Techniques. 4th ed. OUP, 1997.