D'Aulaire, I., & D'Aulaire, E. P. (1941). Leif the lucky. Doubleday.
Chicago Style (17th ed.) CitationD'Aulaire, Ingri, and Edgar Parin D'Aulaire. Leif the Lucky. Garden City, N.Y.: Doubleday, 1941.
MLA (8th ed.) CitationD'Aulaire, Ingri, and Edgar Parin D'Aulaire. Leif the Lucky. Doubleday, 1941.
Warning: These citations may not always be 100% accurate.