APA aipamena

Frolov, I. (1989). Global problems of civilization. Allied Pub.

Chicago Style aipamena

Frolov, Ivan. Global Problems of Civilization. Ahmedabad: Allied Pub, 1989.

MLA aipamena

Frolov, Ivan. Global Problems of Civilization. Allied Pub, 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.