APA استشهاد

Doubtfire, D., & Horowicz, K. (1969). Fun with stamps for the younger collector. Hutchinsoin.

استشهاد بنمط شيكاغو

Doubtfire, Dianne, و Kay Horowicz. Fun with Stamps for the Younger Collector. London: Hutchinsoin, 1969.

MLA استشهاد

Doubtfire, Dianne, و Kay Horowicz. Fun with Stamps for the Younger Collector. Hutchinsoin, 1969.