APA (7th ed.) Citation

Cohen, G. L. (1982). The Origin of the Letter Omicron.

Chicago Style (17th ed.) Citation

Cohen, G. L. The Origin of the Letter Omicron. 1982.

MLA (8th ed.) Citation

Cohen, G. L. The Origin of the Letter Omicron. 1982.

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