Cita APA (7th ed.)

Williams, N. H. (1977). Combinatorial set theory. North-Holland.

Cita Chicago (17th ed.)

Williams, Neil H. Combinatorial Set Theory. Amsterdam ; New-York ; Oxford: North-Holland, 1977.

Cita MLA (8th ed.)

Williams, Neil H. Combinatorial Set Theory. North-Holland, 1977.