Mootnick, A. R., C. P. Groves (2005). „A new generic name for the hoolock gibbon (Hylobatidae)“. Int. J. Primatol. 26: 971–976. doi:10.1007/s10764-005-5332-4.{{cite journal}}: CS1 priežiūra: multiple names: authors list (link)
Mootnick, A. R. (2006). „Gibbon (Hylobatidae) species identification recommended for rescue or breeding centers“. Primate Conserv. 21: 103–138. doi:10.1896/0898-6207.21.1.103.
