Petit, Z. (2015). The essential guide to freelance writing: How to write, work, & thrive on your own terms. Writer's Digest Books.
Chicago-referens (17:e uppl.)Petit, Zachary. The Essential Guide to Freelance Writing: How to Write, Work, & Thrive on Your Own Terms. Cincinnati, Ohio: Writer's Digest Books, 2015.
MLA-referens (9:e uppl.)Petit, Zachary. The Essential Guide to Freelance Writing: How to Write, Work, & Thrive on Your Own Terms. Writer's Digest Books, 2015.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.