Gaya APA

Perl, P. (1978). The Time-Life Encyclopedia of Gardening: Cacti and Succulents (Cet. 1). Canada: Time-Life Books Inc.

Gaya MLA

Perl, Philip. "The Time-Life Encyclopedia of Gardening: Cacti and Succulents". Cet. 1 Canada: Time-Life Books Inc, 1978. Text.