APA

Parker Publishing Company. West Nyack N., . (1965). Business etiquette handbook. West Nyack: s.n.

Chicago

Parker Publishing Company. West Nyack N.Y, . 1965. Business etiquette handbook. West Nyack: s.n.

Harvard

Parker Publishing Company. West Nyack N., . (1965). Business etiquette handbook. West Nyack: s.n.

MLA

Parker Publishing Company. West Nyack N.Y, . Business etiquette handbook. West Nyack: s.n. 1965.