References
Fukuta, Y., Totsuka, M., Takeda, Y., & Yamamoto, H. (2004). Congenital absence of the permanent canines: a clinico-statistical study. Journal of oral science46 (4), 247–252.
Leong, P., & Calache, H. (1999). Bilateral congenitally missing maxillary canines. A case report. Australian dental journal44 (4), 279–282.