Blumenthal, J. C. (1994). English 3200 with writing applications: A programmed course in grammar and usage (4th college ed.). Harcourt Brace College Publishers.
Citazione stile Chigago Style (17a edizione)Blumenthal, Joseph C. English 3200 with Writing Applications: A Programmed Course in Grammar and Usage. 4th college ed. Fort Worth, Texas: Harcourt Brace College Publishers, 1994.
Citatione MLA (9a ed.)Blumenthal, Joseph C. English 3200 with Writing Applications: A Programmed Course in Grammar and Usage. 4th college ed. Harcourt Brace College Publishers, 1994.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.