Fitzhugh, K., & Fitzhugh, L. (1966). Fitzhugh PLUS program: Perceptual learning and understanding skills. Allied Educational Council.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFitzhugh, Kathleen, और Loren Fitzhugh. Fitzhugh PLUS Program: Perceptual Learning and Understanding Skills. Galien, Mich.: Allied Educational Council, 1966.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFitzhugh, Kathleen, और Loren Fitzhugh. Fitzhugh PLUS Program: Perceptual Learning and Understanding Skills. Allied Educational Council, 1966.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.