Leigh, S. R.; Shea, B. T. (1995). "Ontogeny and the evolution of adult body size dimorphism in apes". American Journal of Primatology (İngilizce). 36 (1). ss. 37-60. doi:10.1002/ajp.1350360104. PMID31924084.
Breuer, T.; Ndoundou-Hockemba, M.; Fishlock, V. (2005). "First Observation of Tool Use in Wild Gorillas". PLOS Biology (İngilizce). 3 (11). ss. e380. doi:10.1371/journal.pbio.0030380. PMC1236726 $2. PMID16187795.
Leigh, S. R.; Shea, B. T. (1995). "Ontogeny and the evolution of adult body size dimorphism in apes". American Journal of Primatology (İngilizce). 36 (1). ss. 37-60. doi:10.1002/ajp.1350360104. PMID31924084.
Breuer, T.; Ndoundou-Hockemba, M.; Fishlock, V. (2005). "First Observation of Tool Use in Wild Gorillas". PLOS Biology (İngilizce). 3 (11). ss. e380. doi:10.1371/journal.pbio.0030380. PMC1236726 $2. PMID16187795.