Southwest Regional Laboratory for Educational Research and Development, Baker, R. L., & Schutz, R. E. (1971). Instructional product development. Van Nostrand Reinhold Co..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Southwest Regional Laboratory for Educational Research and Development, Robert Lee Baker, و Richard E. Schutz. Instructional Product Development. New York: Van Nostrand Reinhold Co., 1971.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Southwest Regional Laboratory for Educational Research and Development, et al. Instructional Product Development. Van Nostrand Reinhold Co., 1971.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.