Mattessich, R. (1978). Instrumental reasoning and systems methodology. Theory and decision library 15.
استشهاد بنمط شيكاغوMattessich, Richard. "Instrumental Reasoning and Systems Methodology." Theory and Decision Library 15 1978.
MLA استشهادMattessich, Richard. "Instrumental Reasoning and Systems Methodology." Theory and Decision Library 15 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.