Gaya APA
Urwick, L, F.
(1956).
Pola Management
(
1956)
.
U.S.A:
Uniersity of Minnesota Press.
Gaya MLA
Urwick, Lyndall, F..
"Pola Management".
1956
U.S.A:
Uniersity of Minnesota Press,
1956.
Text.