Gaya APA

Sayles, L, R. (1979). Grolier business library: Leadership what effective managers really do...and how they do it . United Stated of Amerika: Mc Graw Hill.

Gaya MLA

Sayles, Leonard, R.. "Grolier business library: Leadership what effective managers really do...and how they do it". United Stated of Amerika: Mc Graw Hill, 1979. Text.