Cita APA (7a ed.)

Gray, P. M. (1984). Logic, algebra and databases. Ellis Horwood.

Cita Chicago Style (17a ed.)

Gray, Peter M. Logic, Algebra and Databases. Chichester: Ellis Horwood, 1984.

Cita MLA (9a ed.)

Gray, Peter M. Logic, Algebra and Databases. Ellis Horwood, 1984.