APA-čujuhus (7. p.)
Ward, T., & Ward, M. (1970). Programmed instruction for theological education by extension. Erickson Hall.
Chicago-čujuhus (17. p.)
Ward, Ted, juo Margaret Ward. Programmed Instruction for Theological Education by Extension. Michigan: Erickson Hall, 1970.
MLA-čujuhus (9. p.)
Ward, Ted, juo Margaret Ward. Programmed Instruction for Theological Education by Extension. Erickson Hall, 1970.
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