Cita APA (7a ed.)
Selby, S., & Sweet, L. (1969). Sets - Relations - Functions (2 ed.). McGraw Hill Book Comapny.
Cita Chicago Style (17a ed.)
Selby, Samuel, y Leonard Sweet. Sets - Relations - Functions. 2 ed. New York: McGraw Hill Book Comapny, 1969.
Cita MLA (9a ed.)
Selby, Samuel, y Leonard Sweet. Sets - Relations - Functions. 2 ed. McGraw Hill Book Comapny, 1969.
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