(1991). Career Development, Supervised Agricultural Experience, and FFA. The Connecticut Vocational Agriculture Education Curriculum Alfred J. Mannebach and Others. [microform].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Career Development, Supervised Agricultural Experience, and FFA. The Connecticut Vocational Agriculture Education Curriculum Alfred J. Mannebach and Others. [microform]. 1991.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Career Development, Supervised Agricultural Experience, and FFA. The Connecticut Vocational Agriculture Education Curriculum Alfred J. Mannebach and Others. [microform]. 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.