Παραπομπή σε μορφή APA (7η εκδ.)

Norgaard, R. (1994). Ideas in action: A guide to critical thinking and writing. HarperCollins College Publishers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Norgaard, Rolf. Ideas in Action: A Guide to Critical Thinking and Writing. New York: HarperCollins College Publishers, 1994.

Παραπομπή σε μορφή MLA (9th εκδ.)

Norgaard, Rolf. Ideas in Action: A Guide to Critical Thinking and Writing. HarperCollins College Publishers, 1994.