APA (7th ed.) Citation

Penny, R. K., & Gibbings, J. C. (1974). The experimental method: A text for students of engineering and science. Longman.

Chicago Style (17th ed.) Citation

Penny, Royston Kenneth, and J. C. Gibbings. The Experimental Method: A Text for Students of Engineering and Science. London]: Longman, 1974.

MLA (8th ed.) Citation

Penny, Royston Kenneth, and J. C. Gibbings. The Experimental Method: A Text for Students of Engineering and Science. Longman, 1974.