APA (7th ed.) Citation

Knowles, M. S. (1984). The adult learner: A neglected species (3rd ed.). Gulf Pub. Co., Book Division.

Chicago Style (17th ed.) Citation

Knowles, Malcolm Shepherd. The Adult Learner: A Neglected Species. 3rd ed. Houston: Gulf Pub. Co., Book Division, 1984.

MLA (9th ed.) Citation

Knowles, Malcolm Shepherd. The Adult Learner: A Neglected Species. 3rd ed. Gulf Pub. Co., Book Division, 1984.