Cita APA (7a ed.)

Heal, G. M. (1974). The theory of economic planning (1rst ed., 2nd printing.). North-Holland [etc.].

Cita Chicago Style (17a ed.)

Heal, Geoffrey Martin. The Theory of Economic Planning. 1rst ed., 2nd printing. Amsterdam [etc.]: North-Holland [etc.], 1974.

Cita MLA (9a ed.)

Heal, Geoffrey Martin. The Theory of Economic Planning. 1rst ed., 2nd printing. North-Holland [etc.], 1974.