APA (7th ed.) Citation

Gapen, D. K., & Milner, S. P. (1981). Obsolescence.

Chicago Style (17th ed.) Citation

Gapen, D. Kaye, and Sigrid P. Milner. Obsolescence. 1981.

MLA (9th ed.) Citation

Gapen, D. Kaye, and Sigrid P. Milner. Obsolescence. 1981.

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