Cita APA (7a ed.)

(1956). Ordinal algebras; with appendices by Chen-Chung Chang and Bjarni Jónsson.

Cita Chicago Style (17a ed.)

Ordinal Algebras; with Appendices by Chen-Chung Chang and Bjarni Jónsson. 1956.

Cita MLA (9a ed.)

Ordinal Algebras; with Appendices by Chen-Chung Chang and Bjarni Jónsson. 1956.