Cita APA

Selby, S., & Sweet, L. (1969). Sets relarions functions (Ed.2.).

Chicago Edition Citation

Selby, Samuel, i Leonard Sweet. Sets Relarions Functions. Ed.2. New York, Mc Graw Hill Book Company, 1969.

Cita MLA

Selby, Samuel, i Leonard Sweet. Sets Relarions Functions. Ed.2. 1969.