APA استشهاد

Bers, M. K. (1957). Union policy and the older worker. Greenwood Press.

استشهاد بنمط شيكاغو

Bers, Melvin K. Union Policy and the Older Worker. Berkeley: Greenwood Press, 1957.

MLA استشهاد

Bers, Melvin K. Union Policy and the Older Worker. Greenwood Press, 1957.