Gaya APA

Darmaputra, P, G, E. (2011). Professional Telpon Operator . Bali: STP Nusa Dua Bali.

Gaya MLA

Darmaputra, Putu, Gede, Eka. "Professional Telpon Operator". Bali: STP Nusa Dua Bali, 2011. Text.