Palmer, C. I. (1942). Practical mathematics for home study: Being the essentails of arithmetic, geometry, algebra and trigonometry (3rd ed.). McGraw-Hill Book company.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Palmer, Claude Irwin. Practical Mathematics for Home Study: Being the Essentails of Arithmetic, Geometry, Algebra and Trigonometry. 3rd ed. New York,N.Y: McGraw-Hill Book company, 1942.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Palmer, Claude Irwin. Practical Mathematics for Home Study: Being the Essentails of Arithmetic, Geometry, Algebra and Trigonometry. 3rd ed. McGraw-Hill Book company, 1942.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.