APA (7th ed.) Citation

Eisenberg, G. G. (1989). Learning vacations (6th ed.). Peterson's Guides.

Chicago Style (17th ed.) Citation

Eisenberg, Gerson G. Learning Vacations. 6th ed. Princeton, N.J.: Peterson's Guides, 1989.

MLA (9th ed.) Citation

Eisenberg, Gerson G. Learning Vacations. 6th ed. Peterson's Guides, 1989.