APA

Guillemain B., . (1960). The Later middle ages. New York: Hawthorn Books.

Chicago

Guillemain Bernard, . 1960. The Later middle ages. New York: Hawthorn Books.

Harvard

Guillemain B., . (1960). The Later middle ages. New York: Hawthorn Books.

MLA

Guillemain Bernard, . The Later middle ages. New York: Hawthorn Books. 1960.