Cita APA (7a ed.)

Mager, R. F. (1962). Preparing instructional objectives. Lear Siegler.

Cita Chicago Style (17a ed.)

Mager, Robert F. Preparing Instructional Objectives. Los Angeles: Lear Siegler, 1962.

Cita MLA (9a ed.)

Mager, Robert F. Preparing Instructional Objectives. Lear Siegler, 1962.