APA (7th ed.) Citation

Tryon, R. M. (1964). The ferns of Peru: Polypodiaceae ; Dennstaedtieae to Oleandreae. The Gray Herbarium of Harvard Univ.

Chicago Style (17th ed.) Citation

Tryon, Rolla Milton. The Ferns of Peru: Polypodiaceae ; Dennstaedtieae to Oleandreae. Cambridge, Mass: The Gray Herbarium of Harvard Univ, 1964.

MLA (9th ed.) Citation

Tryon, Rolla Milton. The Ferns of Peru: Polypodiaceae ; Dennstaedtieae to Oleandreae. The Gray Herbarium of Harvard Univ, 1964.

Warning: These citations may not always be 100% accurate.