APA aipamena

Bordens, K. S., & Abbott, B. B. (2011). Research design and methods: A process approach (8th ed.). McGraw-Hill.

Chicago Style aipamena

Bordens, Kenneth S., and Bruce B. Abbott. Research Design and Methods: A Process Approach. 8th ed. New York: McGraw-Hill, 2011.

MLA aipamena

Bordens, Kenneth S., and Bruce B. Abbott. Research Design and Methods: A Process Approach. 8th ed. McGraw-Hill, 2011.