APA استشهاد

Griggs,John E. (1970). Evaluating marketing change: An application of systems theory. Michigan University.

استشهاد بنمط شيكاغو

Griggs,John E. Evaluating Marketing Change: An Application of Systems Theory. East Lansing: Michigan University, 1970.

MLA استشهاد

Griggs,John E. Evaluating Marketing Change: An Application of Systems Theory. Michigan University, 1970.