Mager, R. F. (1962). Preparing instructional objectives. Lear Siegler.
Chicagoスタイル(17版)引用形式Mager, Robert F. Preparing Instructional Objectives. Belmont, Calif: Lear Siegler, 1962.
MLA(9版)引用形式Mager, Robert F. Preparing Instructional Objectives. Lear Siegler, 1962.
警告: この引用は必ずしも正確ではありません.