Cita APA (7th ed.)

Selby, N., & Bledsoe, P. S. (2003). Essential college English: A grammar, punctuation and writing workbook (6th ed.). Longman.

Cita Chicago (17th ed.)

Selby, Norwood, i Pamela S. Bledsoe. Essential College English: A Grammar, Punctuation and Writing Workbook. 6th ed. New York: Longman, 2003.

Cita MLA (9th ed.)

Selby, Norwood, i Pamela S. Bledsoe. Essential College English: A Grammar, Punctuation and Writing Workbook. 6th ed. Longman, 2003.