Gaya APA

Darwin, C., Onggo, I, T. (2015). The origin of species by means of natural selections (cet. 1). Yogyakarta: Indoliterasi.

Gaya MLA

Darwin, Charles., Onggo, Ira, Tri. "The origin of species by means of natural selections". cet. 1 Yogyakarta: Indoliterasi, 2015. Text.