Gaya APA

Manurung, Heldin. (2003). Communicative English Program (cet.1). Jakarta: Praninta Aksara.

Gaya Chicago

Manurung, Heldin. Communicative English Program. cet.1 Jakarta: Praninta Aksara, 2003. Text.

Gaya MLA

Manurung, Heldin. Communicative English Program. cet.1 Jakarta: Praninta Aksara, 2003. Text.

Gaya Turabian

Manurung, Heldin. Communicative English Program. cet.1 Jakarta: Praninta Aksara, 2003. Print.