APA

Keenan J., . (1982). Feel free to write: a guide for business and professional people. New York: Wiley.

Chicago

Keenan John, . 1982. Feel free to write: a guide for business and professional people. New York: Wiley.

Harvard

Keenan J., . (1982). Feel free to write: a guide for business and professional people. New York: Wiley.

MLA

Keenan John, . Feel free to write: a guide for business and professional people. New York: Wiley. 1982.