Cita APA (7th ed.)

Heap, D. S. (1987). An outline of planning law (9th ed.). Sweet & Maxwell.

Cita Chicago (17th ed.)

Heap, Desmond Sir. An Outline of Planning Law. 9th ed. London: Sweet & Maxwell, 1987.

Cita MLA (8th ed.)

Heap, Desmond Sir. An Outline of Planning Law. 9th ed. Sweet & Maxwell, 1987.