كتاب التوجيه والإرشاد النفسي

- Zaccaria, J. S. "١٩٦٥". Developmental tasks: Implications for the goals

of guidance. Personnel & Guidance Journal, ٤٤, ٣٧٢ - ٣٧٥.

- Zahran Hamed "١٩٦٤". An Investigation of Some Aspects of Personality with Reference to the Psychological Guidance of Blind Children. M. A. Thesis. University of London.

- Zahran, Hamed "١٩٦٥". A study of personality differences between blind and sighted children. British Journal of Educational Psychology, ٣٥, ٣٢٩-٣٣٨.

- Zahran, Hamed "١٩٦٦". The Self - Concept in Relation to the Psychological Guidance of Adolescents: An Experimental Study. Ph. D. Thesis. University of London.

- Zahran, Hamed "١٩٦٧". The self - concept in the psychological guidance of adolescents. British Journal of Educational Psychology, ٣٧, ٢٢٥ - ٢٤٠.