Gaya APA

Johanningsmeier, K, A., Russell, J, D. (1981). Improving Competence through Modular Instruction . United State of Amerika: kendall hunt.

Gaya MLA

Johanningsmeier, Kathleen, A.., Russell, Jamess, D.. "Improving Competence through Modular Instruction". United State of Amerika: kendall hunt, 1981. Text.