APA (7th ed.) Citation

Gardner, E. S. (1972). The case of the worried waitress. Heinemann.

Chicago Style (17th ed.) Citation

Gardner, Erle Stanley. The Case of the Worried Waitress. London: Heinemann, 1972.

MLA (9th ed.) Citation

Gardner, Erle Stanley. The Case of the Worried Waitress. Heinemann, 1972.

Warning: These citations may not always be 100% accurate.