Citazione Stile APA (7a Edizione)

Holtz, H. (1990). How to succeed as an independent consultant (2a. ed.). John Wiley.

Citazione stile Chigago Style (17a edizione)

Holtz, Herman. How to Succeed as an Independent Consultant. 2a. ed. Nueva York: John Wiley, 1990.

Citatione MLA (9a ed.)

Holtz, Herman. How to Succeed as an Independent Consultant. 2a. ed. John Wiley, 1990.