APA

Nowell C. E., . (1952). A history of Portugal. New York: Van Nostrand.

Chicago

Nowell Charles E, . 1952. A history of Portugal. New York: Van Nostrand.

Harvard

Nowell C. E., . (1952). A history of Portugal. New York: Van Nostrand.

MLA

Nowell Charles E, . A history of Portugal. New York: Van Nostrand. 1952.