APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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

Kontuz: berrikusi erreferentzia hauek erabili aurretik.