ebrary, Inc, Juster, F. T., Gilford, D. M., & Tenenbaum, E. (1990). Precollege science and mathematics teachers: Monitoring supply, demand, and quality. National Academy Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)ebrary, Inc, F. Thomas Juster, Dorothy M. Gilford, و Ellen Tenenbaum. Precollege Science and Mathematics Teachers: Monitoring Supply, Demand, and Quality. Washington, D.C.: National Academy Press, 1990.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)ebrary, Inc, et al. Precollege Science and Mathematics Teachers: Monitoring Supply, Demand, and Quality. National Academy Press, 1990.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.