Gaya APA

Purbomartono, A, D, N, C., Miller, G, T. (1998). Living In The Enviroment: Principles, Connection, And Solutions (10). United States of America: Wadsworth Publishing Company.

Gaya MLA

Purbomartono, Akmala, Dwi, Nugraha,, Cahyono., Miller, G., Tyler. "Living In The Enviroment: Principles, Connection, And Solutions". 10 United States of America: Wadsworth Publishing Company, 1998. Text.