Parker, R. G. (1868). Aids to English composition, prepared for students of all grades: Embracing specimens and examples of school and college exercises and most of the higher departments of English composition, both in prose and verse (20th ed.). Harper & Brothers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Parker, Richard Green. Aids to English Composition, Prepared for Students of All Grades: Embracing Specimens and Examples of School and College Exercises and Most of the Higher Departments of English Composition, Both in Prose and Verse. 20th ed. New York: Harper & Brothers, 1868.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Parker, Richard Green. Aids to English Composition, Prepared for Students of All Grades: Embracing Specimens and Examples of School and College Exercises and Most of the Higher Departments of English Composition, Both in Prose and Verse. 20th ed. Harper & Brothers, 1868.