Gaya APA

Ball, D, A. et al (2014). Perdagangan Internasional= International Business (12 (Buku 1)). Jakarta: salemba empat.

Gaya MLA

Ball, Donald, A. et al. "Perdagangan Internasional= International Business". 12 (Buku 1) Jakarta: salemba empat, 2014. Text.