Cita APA (7th ed.)

Guest A. G. (1977). Law of contract (24.). Oxford Universily Press.

Cita Chicago (17th ed.)

Guest A. G. Law of Contract. 24. London: Oxford Universily Press, 1977.

Cita MLA (9th ed.)

Guest A. G. Law of Contract. 24. Oxford Universily Press, 1977.