Citazione APA

Adams, G. R., & Schvaneveldt, J. D. (1991). Understanding research methods (Ed.2.).

Stile di citazione Chicago

Adams, Gerald R., e Jay D. Schvaneveldt. Understanding Research Methods. Ed.2. NY, Longman, 1991.

Citazione MLA

Adams, Gerald R., e Jay D. Schvaneveldt. Understanding Research Methods. Ed.2. 1991.