Gaya APA

Bertens, Kees. (1993). Etika (1). : Gramedia.

Gaya Chicago

Bertens, Kees. Etika. 1 : Gramedia, 1993. Non Fiction.

Gaya MLA

Bertens, Kees. Etika. 1 : Gramedia, 1993. Non Fiction.

Gaya Turabian

Bertens, Kees. Etika. 1 : Gramedia, 1993. Non Fiction.