APA (7th ed.) Citation

De Souto, M. S. (1993). Group travel (2nd ed.). Delmar Publishers.

Chicago Style (17th ed.) Citation

De Souto, Martha Sarbey. Group Travel. 2nd ed. New York: Delmar Publishers, 1993.

MLA (8th ed.) Citation

De Souto, Martha Sarbey. Group Travel. 2nd ed. Delmar Publishers, 1993.