Gaya APA

Agustin, E. (2013). Business Law : The Duty of Good Faith and Pre-Contractual Liability (A Comparative Study) (1). Surabaya: Pusat Penerbitan dan Percetakan Unair.

Gaya MLA

Agustin, Erni. "Business Law : The Duty of Good Faith and Pre-Contractual Liability (A Comparative Study)". 1 Surabaya: Pusat Penerbitan dan Percetakan Unair, 2013. Text.