Jessica Groenendijk, M.S.
Groenendijk, J. 2019. The Giant Otter: Giants of the Amazon. Pen and Sword Books, ISBN: 9781526711748, 216 pp.Groenendijk, J., F. Hajek. 2015. A reliable method for sexing giant otters (Pteronura brasiliensis) in the wild. Latin American Journal of Aquatic Mammals 10. 163-165.
