APA (7th ed.) Citation

Spivey, J. M. (1988). Understanding Z: A specification language and its formal semantics. Cambridge University Press.

Chicago Style (17th ed.) Citation

Spivey, J. M. Understanding Z: A Specification Language and Its Formal Semantics. Cambridge [Cambridgeshire] : New York: Cambridge University Press, 1988.

MLA (9th ed.) Citation

Spivey, J. M. Understanding Z: A Specification Language and Its Formal Semantics. Cambridge University Press, 1988.

Warning: These citations may not always be 100% accurate.