Gaya APA

Sayless, L, R. (1979). Grolier Busines Library : Leadership, What Effective Managers Really do And HowrnThey Do It . : Grolier Incorporated.

Gaya MLA

Sayless, Leonard, R.. "Grolier Busines Library : Leadership, What Effective Managers Really do And HowrnThey Do It". : Grolier Incorporated, 1979. Text.