De Souto, M. S. (1985). Group travel operations manual. Merton House Travel and Tourism Publishers.
Chicago Style (17th ed.) CitationDe Souto, Martha Sarbey. Group Travel Operations Manual. Wheaton, Ill.: Merton House Travel and Tourism Publishers, 1985.
MLA (9th ed.) CitationDe Souto, Martha Sarbey. Group Travel Operations Manual. Merton House Travel and Tourism Publishers, 1985.
Warning: These citations may not always be 100% accurate.