Cita APA (7a ed.)

Knowles, M. S. (1973). The adult learner: A neglected species. Gulf Pub.

Cita Chicago Style (17a ed.)

Knowles, Malcolm Shepherd. The Adult Learner: A Neglected Species. Houston [Tex.]: Gulf Pub, 1973.

Cita MLA (9a ed.)

Knowles, Malcolm Shepherd. The Adult Learner: A Neglected Species. Gulf Pub, 1973.