APA-viite

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

Chicago-tyylinen lähdeviittaus

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

MLA-viite

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