APA (7th ed.) Citation

(1979). The World of travel: An introduction to the travel industry, basic geography as it applies to travel. National Publishers.

Chicago Style (17th ed.) Citation

The World of Travel: An Introduction to the Travel Industry, Basic Geography as It Applies to Travel. Elmsford, N.Y: National Publishers, 1979.

MLA (9th ed.) Citation

The World of Travel: An Introduction to the Travel Industry, Basic Geography as It Applies to Travel. National Publishers, 1979.