Cita APA (7a ed.)

Doyal, L. (1990). A theory of human needs. Macmillan.

Cita Chicago Style (17a ed.)

Doyal, Len. A Theory of Human Needs. London: Macmillan, 1990.

Cita MLA (9a ed.)

Doyal, Len. A Theory of Human Needs. Macmillan, 1990.