APA (7th ed.) Citation

Allan, H. H. Indigenous Tracheophyta: Psilopsida, Lycopsida, Filicopsida, Gymnospermae, Dicothyledones. Owen.

Chicago Style (17th ed.) Citation

Allan, Harry Howard. Indigenous Tracheophyta: Psilopsida, Lycopsida, Filicopsida, Gymnospermae, Dicothyledones. Wellington, New Zealand: Owen.

MLA (9th ed.) Citation

Allan, Harry Howard. Indigenous Tracheophyta: Psilopsida, Lycopsida, Filicopsida, Gymnospermae, Dicothyledones. Owen.

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