Hanshaw, p. 1. (EN) Hanshaw Thomas, H., Agnes Arber, 1879–1960, in Biographical Memoirs of Fellows of the Royal Society, vol. 6, Novembre 1960, pp. 1-11.}
Hanshaw, p. 2. (EN) Hanshaw Thomas, H., Agnes Arber, 1879–1960, in Biographical Memoirs of Fellows of the Royal Society, vol. 6, Novembre 1960, pp. 1-11.}
Hanshaw, p. 4. (EN) Hanshaw Thomas, H., Agnes Arber, 1879–1960, in Biographical Memoirs of Fellows of the Royal Society, vol. 6, Novembre 1960, pp. 1-11.}