Petrill, J. (1949). After the whistle blows: A guide to the field of recreation in industry. Pub. by William-Frederick Press for the Industrial Recreation Bureau.
Chicago Style (17th ed.) CitationPetrill, Jack. After the Whistle Blows: A Guide to the Field of Recreation in Industry. New York: Pub. by William-Frederick Press for the Industrial Recreation Bureau, 1949.
MLA (9th ed.) CitationPetrill, Jack. After the Whistle Blows: A Guide to the Field of Recreation in Industry. Pub. by William-Frederick Press for the Industrial Recreation Bureau, 1949.
Warning: These citations may not always be 100% accurate.