एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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