Cita APA (7a ed.)
Cross, W. (1991). Action letters for small business owners. Wiley&Sons.
Cita Chicago Style (17a ed.)
Cross, Wilbur. Action Letters for Small Business Owners. New York: Wiley&Sons, 1991.
Cita MLA (9a ed.)
Cross, Wilbur. Action Letters for Small Business Owners. Wiley&Sons, 1991.
Precaución: Estas citas no son 100% exactas.