Gaya APA

Borell, M. et al (1997). Encyclopedia of Science 7 : The Environtment (Jilid 7, Edisi Revisi, Cetakan 1). Bangkok: Macmillan Library Reference.

Gaya MLA

Borell, Marriley. et al. "Encyclopedia of Science 7 : The Environtment". Jilid 7, Edisi Revisi, Cetakan 1 Bangkok: Macmillan Library Reference, 1997. Text.