Van de Graaf RC, IJpma FF, Nicolai JP. Sir Charles Alfred Ballance (1856-1936) and the introduction of facial nerve crossover anastomosis in 1895. „Journal of Plastic, Reconstructive & Aesthetic Surgery”. 1 (62), s. 43–9, styczeń 2009. DOI: 10.1016/j.bjps.2008.06.052. PMID: 18922751.
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Van de Graaf RC, IJpma FF, Nicolai JP. Sir Charles Alfred Ballance (1856-1936) and the introduction of facial nerve crossover anastomosis in 1895. „Journal of Plastic, Reconstructive & Aesthetic Surgery”. 1 (62), s. 43–9, styczeń 2009. DOI: 10.1016/j.bjps.2008.06.052. PMID: 18922751.
Waldman EH, Lustig LR. Sir Charles Alfred Ballance: contributions to otology and neurotology. „Otology & Neurotology”. 5 (26), s. 1073–82, wrzesień 2005. PMID: 16151361.