Παραπομπή σε μορφή APA (7η εκδ.)

Hula, K. W. (1999). Lobbying together: Interest group coalitions in legislative politics. Georgetown University Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Hula, Kevin W. Lobbying Together: Interest Group Coalitions in Legislative Politics. Washington, DC: Georgetown University Press, 1999.

Παραπομπή σε μορφή MLA (8th εκδ.)

Hula, Kevin W. Lobbying Together: Interest Group Coalitions in Legislative Politics. Georgetown University Press, 1999.