Gaya APA
Drucker, P, F. et al (1991).
Nonprofit management & leadership: Volume 2, Number 1 (1).
California:
Jossey - Bass Publishers.
Gaya MLA
Drucker, Peter, F.. et al.
"Nonprofit management & leadership: Volume 2, Number 1".
1
California:
Jossey - Bass Publishers,
1991.
Text.