Gaya APA

Hariyanto, Sugeng. (2010). English business correspondence: a practical guide for business and secretarial students and profesional secretaries (cet.5). Yogyakarta: Kanisius.

Gaya Chicago

Hariyanto, Sugeng. English business correspondence: a practical guide for business and secretarial students and profesional secretaries. cet.5 Yogyakarta: Kanisius, 2010. Text.

Gaya MLA

Hariyanto, Sugeng. English business correspondence: a practical guide for business and secretarial students and profesional secretaries. cet.5 Yogyakarta: Kanisius, 2010. Text.

Gaya Turabian

Hariyanto, Sugeng. English business correspondence: a practical guide for business and secretarial students and profesional secretaries. cet.5 Yogyakarta: Kanisius, 2010. Print.