APA

Kalnay F., . (1959). The richest boy in the world. New York: Harcourt, Brace.

Chicago

Kalnay Francis, . 1959. The richest boy in the world. New York: Harcourt, Brace.

Harvard

Kalnay F., . (1959). The richest boy in the world. New York: Harcourt, Brace.

MLA

Kalnay Francis, . The richest boy in the world. New York: Harcourt, Brace. 1959.