Παραπομπή σε μορφή APA (7η εκδ.)

SAMPSON, R. J. (1983). The American Economy Analysis Issues Principles Roy J. Sampson And Ira Marienhoff. Houghton Mifflin Company.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SAMPSON, Roy J. The American Economy Analysis Issues Principles Roy J. Sampson And Ira Marienhoff. Houghton Mifflin Company, 1983.

Παραπομπή σε μορφή MLA (8th εκδ.)

SAMPSON, Roy J. The American Economy Analysis Issues Principles Roy J. Sampson And Ira Marienhoff. Houghton Mifflin Company, 1983.