Burton, D. M. (1965). An introduction to abstract mathematical systems. Addison-Wesley Publishing Company, Inc.
Cita Chicago (17th ed.)Burton, David M. An Introduction to Abstract Mathematical Systems. Reading, Mass: Addison-Wesley Publishing Company, Inc, 1965.
Cita MLA (9th ed.)Burton, David M. An Introduction to Abstract Mathematical Systems. Addison-Wesley Publishing Company, Inc, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.