Langan, J., & Johnson, B. (2009). English essentials: What every college student needs to know about grammar, punctuation, and usage (2nd ed., Instructor annotated ed.). McGraw-Hill.
Cytowanie według stylu Chicago (wyd. 17)Langan, John, i Beth Johnson. English Essentials: What Every College Student Needs to Know About Grammar, Punctuation, and Usage. 2nd ed., Instructor annotated ed. New York: McGraw-Hill, 2009.
Cytowanie według stylu MLA (wyd. 9)Langan, John, i Beth Johnson. English Essentials: What Every College Student Needs to Know About Grammar, Punctuation, and Usage. 2nd ed., Instructor annotated ed. McGraw-Hill, 2009.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..