United States. Office of Education, National Institute of Education, & Harrison, S. A. (1975). Improving instructional productivity in higher education. Educational Technology Pub.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रUnited States. Office of Education, National Institute of Education, और Shelley A. Harrison. Improving Instructional Productivity in Higher Education. Englewood Cliffs, N. J: Educational Technology Pub, 1975.
एमएलए (9वां संस्करण) प्रशस्ति पत्रUnited States. Office of Education, et al. Improving Instructional Productivity in Higher Education. Educational Technology Pub, 1975.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.