Gaya APA

Arifin, W, , J. (2007). Public Speaking is Easy From Peer to Peer (1). Yogyakarta: Penerbit Andi.

Gaya MLA

Arifin, Wijaya, , Johanes. "Public Speaking is Easy From Peer to Peer". 1 Yogyakarta: Penerbit Andi, 2007. Text.