APA aipamena

Heffernan, J. W. (1986). Writing: A college handbook (2ª ed.). W.W. Norton.

Chicago Style aipamena

Heffernan, James W. Writing: A College Handbook. 2ª ed. W.W. Norton, 1986.

MLA aipamena

Heffernan, James W. Writing: A College Handbook. 2ª ed. W.W. Norton, 1986.