Helland, M. (1980). There were giants: The life of James H. Wilbur. M. Helland.
Cita Chicago Style (17a ed.)Helland, Maurice. There Were Giants: The Life of James H. Wilbur. Yakima, WA (5309 Crest Dr., Yakima 98908): M. Helland, 1980.
Cita MLA (8a ed.)Helland, Maurice. There Were Giants: The Life of James H. Wilbur. M. Helland, 1980.
Precaución: Estas citas no son 100% exactas.