Walker, G. (1994). The amplification requirements of persons with conductive and mixed (conductive & sensori-neural) hearing losses. [publisher not identified].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Walker, Gary. The Amplification Requirements of Persons with Conductive and Mixed (conductive & Sensori-neural) Hearing Losses. [Place of publication not identified]: [publisher not identified], 1994.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Walker, Gary. The Amplification Requirements of Persons with Conductive and Mixed (conductive & Sensori-neural) Hearing Losses. [publisher not identified], 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.