Citazione Stile APA (7a Edizione)

Gale, F. L. (1975). Determining the requirements for the design of learner-based instruction. Merrill.

Citazione stile Chigago Style (17a edizione)

Gale, Fred L. Determining the Requirements for the Design of Learner-based Instruction. Columbus, Ohio: Merrill, 1975.

Citatione MLA (9a ed.)

Gale, Fred L. Determining the Requirements for the Design of Learner-based Instruction. Merrill, 1975.