APA (7th ed.) Citation

Ferguson, T. R. (1982). Conical element nomenclature, use, and metrology. Optical Engineering, 21, 959.

Chicago Style (17th ed.) Citation

Ferguson, T. R. "Conical Element Nomenclature, Use, and Metrology." Optical Engineering 21 (1982): 959.

MLA (9th ed.) Citation

Ferguson, T. R. "Conical Element Nomenclature, Use, and Metrology." Optical Engineering, vol. 21, 1982, p. 959.

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