Gaya APA

HUBER, G, P, [., VEN, A, H, V, D, [. (1995). LONGITUDINAL field research methods: . London: SAGE Publications.

Gaya MLA

HUBER, George, P., [ed.]., VEN, Andrew, H., Van, De, [ed.]. "LONGITUDINAL field research methods:". London: SAGE Publications, 1995. Buku.