APA استشهاد

Rollnik, H., & Pfeil, W. (1974). Proceedings. North-Holland Publishing Company.

استشهاد بنمط شيكاغو

Rollnik, H., و W. Pfeil. Proceedings. Amsterdam: North-Holland Publishing Company, 1974.

MLA استشهاد

Rollnik, H., و W. Pfeil. Proceedings. North-Holland Publishing Company, 1974.