1. Albert, A. (2012). Feeding and ranging behavior of northern pigtailed macaques (Macaca leonina): Impact on their seed dispersal effectiveness and ecological contribution in a tropical rainforest at Khao Yai National Park, Thailand. Ph.D. dissertation, Université de Liège, Liège, Belgium.
2. Albert, A., Savini, T., & Huynen, M.-C. (2013). The role of Macaca spp. (Primates: Cercopithecidae) in seed dispersal networks. The Raffles Bulletin of Zoology, in press.
3. Altmann, J. (1974). Observational study of behavior: sampling methods. Behaviour, 49, 227–267.
4. Andresen, E. (2002). Primary seed dispersal by red howler monkeys and the effect of defecation patterns on the fate of dispersed seeds. Biotropica, 34(2), 261–272.
5. Andresen, E., & Levey, D. J. (2004). Effects of dung and seed size on secondary dispersal, seed predation, and seedling establishment of rain forest trees. Oecologia, 139, 45–54.