APA (7th ed.) Citation

Vallen, J. J. (1968). The art and science of modern innkeeping. Hayden Book.

Chicago Style (17th ed.) Citation

Vallen, Jerome J. The Art and Science of Modern Innkeeping. Rochelle Park, N. J: Hayden Book, 1968.

MLA (9th ed.) Citation

Vallen, Jerome J. The Art and Science of Modern Innkeeping. Hayden Book, 1968.