APA ציטוט

Trochim,William M K. (2003). Research methods (2.). Biztantra.

Chicago Edition Citation

Trochim,William M K. Research Methods. 2. New Delhi: Biztantra, 2003.

ציטוט MLA

Trochim,William M K. Research Methods. 2. Biztantra, 2003.