Gaya APA

GREENSTEIN, F, I., POLSBY, N, W. (1975). POLICIES AND POLICYMAKING . United States of America: Addison-Wesley Publishing Company.

Gaya MLA

GREENSTEIN, FRED, I.., POLSBY, NELSON, W.. "POLICIES AND POLICYMAKING". United States of America: Addison-Wesley Publishing Company, 1975. Text.