APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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