Gaya APA

Seels, B, B., Richey, R, C. (1994). Instructional technology : the definition and domains of the field . Washington, D.C: Association for educations and technology.

Gaya MLA

Seels, Barbara, B.., Richey, Rita, C.. "Instructional technology : the definition and domains of the field". Washington, D.C: Association for educations and technology, 1994. Text.