Safford, Laurance F. with Cameron A. Warren and Robert R. Payne. Earhart's Flight into Yesterday: The Facts Without the Fiction. McLéan, Virginia: Paladwr Press, 2003. ISBN 1-888962-20-8.
Sharp, Andrew. The Discovery of the Pacific Islands. Oxford: Oxford University Press, 1960.
Suárez, Thomas. Early Mapping of the Pacific. Singapore: Periplus Editions, 2004. ISBN 0-79460-092-1.