APA (7th ed.) Citation

Brennan, L., & Block, D. (1991). The complete book of business etiquette. Piatkus.

Chicago Style (17th ed.) Citation

Brennan, Lynne, and David Block. The Complete Book of Business Etiquette. London: Piatkus, 1991.

MLA (9th ed.) Citation

Brennan, Lynne, and David Block. The Complete Book of Business Etiquette. Piatkus, 1991.

Warning: These citations may not always be 100% accurate.