Citazione Stile APA (7a Edizione)

Farol, H. F. (1987). A manual of effective business correspondence. University Book Supply, Inc.

Citazione stile Chigago Style (17a edizione)

Farol, Honesto F. A Manual of Effective Business Correspondence. Manila: University Book Supply, Inc, 1987.

Citatione MLA (9a ed.)

Farol, Honesto F. A Manual of Effective Business Correspondence. University Book Supply, Inc, 1987.