Sporne, K. R. (1966). The morphology of pteridophytes: The structure of ferns and allied plants ([2nd ed].). Hutchinson University Library.
Citazione stile Chigago Style (17a edizione)Sporne, K. R. The Morphology of Pteridophytes: The Structure of Ferns and Allied Plants. [2nd ed]. London: Hutchinson University Library, 1966.
Citatione MLA (9a ed.)Sporne, K. R. The Morphology of Pteridophytes: The Structure of Ferns and Allied Plants. [2nd ed]. Hutchinson University Library, 1966.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.