Sporne, K. R. (1975). The Morphology of Pteridophytes: The Structure of Ferns and Allied Plants (4th ed.). Hutchinson.
Citazione stile Chigago Style (17a edizione)Sporne, K. R. The Morphology of Pteridophytes: The Structure of Ferns and Allied Plants. 4th ed. London: Hutchinson, 1975.
Citatione MLA (9a ed.)Sporne, K. R. The Morphology of Pteridophytes: The Structure of Ferns and Allied Plants. 4th ed. Hutchinson, 1975.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.