Copping, A. M. (1971). "Sir Charles James Martin--A biographical sketch (1866-1955)". The Journal of Nutrition. 101 (1): 3–8. doi:10.1093/jn/101.1.1. PMID4924885.
Copping, A. M. (1971). "Sir Charles James Martin--A biographical sketch (1866-1955)". The Journal of Nutrition. 101 (1): 3–8. doi:10.1093/jn/101.1.1. PMID4924885.