Gaya APA

Usman, L, L. (1986). Practical English Conversation : Basic Sentences - Exercises - Implementation (Cet. 10). Bandung: Angkasa.

Gaya MLA

Usman, Lucky, L.. "Practical English Conversation : Basic Sentences - Exercises - Implementation". Cet. 10 Bandung: Angkasa, 1986. Monograf.