Gibson, E. J. (1969). Principles of perceptual learning and development. Appleton-Century-Crofts.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gibson, Eleanor Jack. Principles of Perceptual Learning and Development. New York: Appleton-Century-Crofts, 1969.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Gibson, Eleanor Jack. Principles of Perceptual Learning and Development. Appleton-Century-Crofts, 1969.