Cita APA (7th ed.)

Parker Publishing Co. (1965). Business Etiquette Handbook. Parker Publishing Co.,Inc.

Cita Chicago (17th ed.)

Parker Publishing Co. Business Etiquette Handbook. New York: Parker Publishing Co.,Inc, 1965.

Cita MLA (9th ed.)

Parker Publishing Co. Business Etiquette Handbook. Parker Publishing Co.,Inc, 1965.