APA (7th ed.) Citation

Lee, J. (1988). An electromyographic comparison of eight sit-up variations. [publisher not identified].

Chicago Style (17th ed.) Citation

Lee, Jurip. An Electromyographic Comparison of Eight Sit-up Variations. [Place of publication not identified]: [publisher not identified], 1988.

MLA (9th ed.) Citation

Lee, Jurip. An Electromyographic Comparison of Eight Sit-up Variations. [publisher not identified], 1988.