Cita APA (7a ed.)

Gray, P. M. D. (1985). Logic, algebra and databases (Repr.). Ellis Horwood [etc.].

Cita Chicago Style (17a ed.)

Gray, Peter M. D. Logic, Algebra and Databases. Repr. Chichester [etc.]: Ellis Horwood [etc.], 1985.

Cita MLA (9a ed.)

Gray, Peter M. D. Logic, Algebra and Databases. Repr. Ellis Horwood [etc.], 1985.