Selby, N. (1987). Essential college english: A grammar and puntuation workbook (2ª ed.). Norwood Selby.
Chicago Style (17th ed.) CitationSelby, Norwood. Essential College English: A Grammar and Puntuation Workbook. 2ª ed. Norwood Selby, 1987.
MLA (9th ed.) CitationSelby, Norwood. Essential College English: A Grammar and Puntuation Workbook. 2ª ed. Norwood Selby, 1987.
Warning: These citations may not always be 100% accurate.