Gaya APA

Haas, J., Springer, J. (1998). Applied policy research:concepts and cases/ Haas.J (Cet.1). New york & london: Garland Publishng.

Gaya MLA

Haas, J., Springer, Jfred. "Applied policy research:concepts and cases/ Haas.J". Cet.1 New york & london: Garland Publishng, 1998. Text.