APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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