Gaya APA
Rachels, J., Sudiarja, A.
(2013).
Filsafat moral = the elements of moral philosophy
.
Yogyakarta:
Kanisius.
Gaya MLA
Rachels, James., Sudiarja, A..
"Filsafat moral = the elements of moral philosophy".
Yogyakarta:
Kanisius,
2013.
Text.