APA

Harper T., American Society of Journalists and Authors, . (2003). The ASJA guide to freelance writing. New York: St. Martin's Griffin.

Chicago

Harper Timothy, American Society of Journalists and Authors, . 2003. The ASJA guide to freelance writing. New York: St. Martin's Griffin.

Harvard

Harper T., American Society of Journalists and Authors, . (2003). The ASJA guide to freelance writing. New York: St. Martin's Griffin.

MLA

Harper Timothy, American Society of Journalists and Authors, . The ASJA guide to freelance writing. New York: St. Martin's Griffin. 2003.