APA (7th ed.) Citation

Marques, A. H. R. d. O. (1972). History of Portugal. Columbia University Press.

Chicago Style (17th ed.) Citation

Marques, António Henrique R. de Oliveira. History of Portugal. New York: Columbia University Press, 1972.

MLA (9th ed.) Citation

Marques, António Henrique R. de Oliveira. History of Portugal. Columbia University Press, 1972.