Gale, F. L. (1975). Determining the requirements for the design of learner-based instruction. Merrill.
芝加哥风格引文Gale, Fred L. Determining the Requirements for the Design of Learner-based Instruction. Columbus, Ohio: Merrill, 1975.
MLA引文Gale, Fred L. Determining the Requirements for the Design of Learner-based Instruction. Merrill, 1975.
警告：这些引文格式不一定是100％准确.