Cita APA (7a ed.)

Harbury, C. D. (1972). Descriptive economies (4th ed.). Pitman Publishing.

Cita Chicago Style (17a ed.)

Harbury, C. D. Descriptive Economies. 4th ed. London: Pitman Publishing, 1972.

Cita MLA (9a ed.)

Harbury, C. D. Descriptive Economies. 4th ed. Pitman Publishing, 1972.