Lua APA (7ú heag.)

Glaser, R., & Holzman, A. G. (1962). Multi-tracking in programmed instruction. Dept. of Psychology, Univ. of Pittsburgh.

Lua i Stíl Chicago (17ú heag.)

Glaser, Robert, agus Albert G. Holzman. Multi-tracking in Programmed Instruction. Pittsburgh: Dept. of Psychology, Univ. of Pittsburgh, 1962.

Lua MLA (8ú heag.)

Glaser, Robert, agus Albert G. Holzman. Multi-tracking in Programmed Instruction. Dept. of Psychology, Univ. of Pittsburgh, 1962.

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