Navigable waterways
MLA
Alexander, Pamela and Gotham Book Mart Collection (University of Pennsylvania). Navigable waterways. New Haven : Yale University Press, [1985]
APA
Alexander, P. & Gotham Book Mart Collection (University of Pennsylvania). (1985). Navigable waterways. New Haven : Yale University Press.
Chicago
Alexander, Pamela and Gotham Book Mart Collection (University of Pennsylvania). Navigable waterways. New Haven : Yale University Press, [1985]