APA

Van Loon H. W., .Van Loon's geography: the story of the world we live in. New York: .

Chicago

Van Loon Hendrik Willem, .Van Loon's geography: the story of the world we live in. New York: .

Harvard

Van Loon H. W., .Van Loon's geography: the story of the world we live in. New York: .

MLA

Van Loon Hendrik Willem, .New York: . .