MacCaughey, V. and Emerson, J. S. 1913c. The kalo in Hawaii (III). Hawaiian Forester and Agriculturalist 10, 280-288.

MacCaughey, V. and Emerson, J. S. 1913d. The kalo in Hawaii (IV).Hawaiian Forester and Agriculturalist 10, 315-323.

MacCaughey, V. and Emerson, J. S. 1913e. The kalo in Hawaii (V). Hawaiian Forester and Agriculturalist 10, 349-358.