APA (7th ed.) Citation

Walker, E. H. (1976). Flora of Okinawa and the southern Ryukyu Islands. Smithsonian Institution Press.

Chicago Style (17th ed.) Citation

Walker, Egbert H. Flora of Okinawa and the Southern Ryukyu Islands. Washington: Smithsonian Institution Press, 1976.

MLA (9th ed.) Citation

Walker, Egbert H. Flora of Okinawa and the Southern Ryukyu Islands. Smithsonian Institution Press, 1976.