Douglas, W. L., & Torre, L. A. (1986). Site perspectives. Van Nostrand Reinhold.
Chicago Style aipamenaDouglas, William Lake, and L. Azeo Torre. Site Perspectives. New York: Van Nostrand Reinhold, 1986.
MLA aipamenaDouglas, William Lake, and L. Azeo Torre. Site Perspectives. Van Nostrand Reinhold, 1986.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.