(1989). Proposed policies and standards for the basic sciences (biology, chemistry, math and physics) and the science component of teacher education.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Proposed Policies and Standards for the Basic Sciences (biology, Chemistry, Math and Physics) and the Science Component of Teacher Education. 1989.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Proposed Policies and Standards for the Basic Sciences (biology, Chemistry, Math and Physics) and the Science Component of Teacher Education. 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.