Cita APA (7a ed.)

Clark, J. O. E., & Hemsley, W. (1991). Harrap's dictionary of science & technology: Edited by John O. E. Clark, William Hemsley. Harrap Books.

Cita Chicago Style (17a ed.)

Clark, John O. E., y William Hemsley. Harrap's Dictionary of Science & Technology: Edited by John O. E. Clark, William Hemsley. Bromley, Kent: Harrap Books, 1991.

Cita MLA (8a ed.)

Clark, John O. E., y William Hemsley. Harrap's Dictionary of Science & Technology: Edited by John O. E. Clark, William Hemsley. Harrap Books, 1991.