(en) « Monograph and Iconograph of Native British Orchidacece (Book review) », Nature, Springer Science and Business Media LLC, vol. 132, no 3334, , p. 464-464 (ISSN0028-0836, DOI10.1038/132464b0, lire en ligne).
(en) « Monograph and Iconograph of Native British Orchidacece (Book review) », Nature, Springer Science and Business Media LLC, vol. 132, no 3334, , p. 464-464 (ISSN0028-0836, DOI10.1038/132464b0, lire en ligne).