Literature references

2 literature references:

Author: Groves, Colin, and Peter Grubb
Year: 2011
Title:
Source: Ungulate Taxonomy
Author: Groves, Colin P., and David M. Leslie, Jr.
Year: 2011
Title: Rhinoceros sondaicus (Perissodactyla: Rhinocerotidae)
Source: Mammalian Species, vol. 43, no. 887