Citazione Stile APA (7a Edizione)

Gifford, E. W., & Gifford, D. S. (1960). Archaeological excavations in Yap. University of California Press.

Citazione stile Chigago Style (17a edizione)

Gifford, Edward Winslow, e Delila S. Gifford. Archaeological Excavations in Yap. [Berkeley: University of California Press, 1960.

Citatione MLA (9a ed.)

Gifford, Edward Winslow, e Delila S. Gifford. Archaeological Excavations in Yap. University of California Press, 1960.