APA

Hill N., . (1965). The master-key to riches. new york: ballantine books.

Chicago

Hill Napoleon, . 1965. The master-key to riches. new york: ballantine books.

Harvard

Hill N., . (1965). The master-key to riches. new york: ballantine books.

MLA

Hill Napoleon, . The master-key to riches. new york: ballantine books. 1965.