Cita APA (7a ed.)
Willis, W. R. (1979). 200 years--and still counting! Victor Books.
Cita Chicago Style (17a ed.)
Willis, Wesley R. 200 Years--and Still Counting! Wheaton, Ill.: Victor Books, 1979.
Cita MLA (9a ed.)
Willis, Wesley R. 200 Years--and Still Counting! Victor Books, 1979.
Precaución: Estas citas no son 100% exactas.