توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Sterling, E. L., & Cole, M. E. (1927). Important points in English usage: A laboratory method in the essentials of good English ([2nd experimental ed.].). [Press of S & S printers].

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Sterling, Edna L., و Miriam Elizabeth Cole. Important Points in English Usage: A Laboratory Method in the Essentials of Good English. [2nd experimental ed.]. [Seattle]: [Press of S & S printers], 1927.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Sterling, Edna L., و Miriam Elizabeth Cole. Important Points in English Usage: A Laboratory Method in the Essentials of Good English. [2nd experimental ed.]. [Press of S & S printers], 1927.