APA-Zitierstil (7. Ausg.)

Hardin, E., & Borus, M. E. (1971). The economic benefits and costs of retraining. Heath.

Chicago-Zitierstil (17. Ausg.)

Hardin, Einar, und Michael E. Borus. The Economic Benefits and Costs of Retraining. Lexington, Mass: Heath, 1971.

MLA-Zitierstil (9. Ausg.)

Hardin, Einar, und Michael E. Borus. The Economic Benefits and Costs of Retraining. Heath, 1971.