APA (7e ed.) Bronvermelding

Barkley, N. (1995). The Crystal - Barkley guide to taking charge of your Career. Workman.

Chicago (17e ed.) Bronvermelding

Barkley, Nella. The Crystal - Barkley Guide to Taking Charge of Your Career. New york: Workman, 1995.

MLA (9e ed.) Bronvermelding

Barkley, Nella. The Crystal - Barkley Guide to Taking Charge of Your Career. Workman, 1995.