Citazione Stile APA (7a Edizione)

Singleton, . W. T. (1981). Management skills. University Park P..

Citazione stile Chigago Style (17a edizione)

Singleton, W. T. Management Skills. Baltimore: University Park P., 1981.

Citatione MLA (9a ed.)

Singleton, W. T. Management Skills. University Park P., 1981.