APA-viite (7. p.)

Berkman, F. W. Selling today's resorts in tomorrow's market. Hotel Sales Management Association.

Chicago-viite (17. p.)

Berkman, Frank W. Selling Today's Resorts in Tomorrow's Market. New York: Hotel Sales Management Association.

MLA-viite (9. p.)

Berkman, Frank W. Selling Today's Resorts in Tomorrow's Market. Hotel Sales Management Association.