Al-Shehri, H. R., & Blackman, C. (1986). An exploratory study of selected andragogical and pedagogical variables related to teacher preferences for approaches to their continued learning. Michigan State University.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Al-Shehri, Hasen Rafea, و Charles Blackman. An Exploratory Study of Selected Andragogical and Pedagogical Variables Related to Teacher Preferences for Approaches to Their Continued Learning. Michigan: Michigan State University, 1986.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Al-Shehri, Hasen Rafea, و Charles Blackman. An Exploratory Study of Selected Andragogical and Pedagogical Variables Related to Teacher Preferences for Approaches to Their Continued Learning. Michigan State University, 1986.