توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Ferrell, D. R. Communicative interaction between normally developing and handicapped preschool children: Identifying facilitative strategies. University Microfilms International.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Ferrell, Dianne Raeke. Communicative Interaction Between Normally Developing and Handicapped Preschool Children: Identifying Facilitative Strategies. Ann Arbor, Mich.: University Microfilms International.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Ferrell, Dianne Raeke. Communicative Interaction Between Normally Developing and Handicapped Preschool Children: Identifying Facilitative Strategies. University Microfilms International.