Patton, Felix, Petra Campbell, and Angie Genade. “Observations on the 24-Hour Clock, Reproduction and Gestation Periods of the White Rhinoceros at Ziwa Rhino Sanctuary, Uganda”. Pachyderm 59 (October 3, 2018): 103–108. Accessed April 16, 2024. https://pachydermjournal.org/index.php/pachyderm/article/view/89.