Gaya APA

Cochran, C, L., Malone, E, F. (1999). Public Policy : Perspective and Choices (Dua). United States of America: McGraw-Hill.

Gaya MLA

Cochran, Charles, L.., Malone, Eloise, F.. "Public Policy : Perspective and Choices". Dua United States of America: McGraw-Hill, 1999. Text.