Walker, E. H. (1954). Important trees of the Ryukyu Islands: = Ryūkyū jūyō jumokushi. Forestry Bureau, Gov. of the Ryukyu Islands.
Chicago Style (17th ed.) CitationWalker, Egbert H. Important Trees of the Ryukyu Islands: = Ryūkyū Jūyō Jumokushi. Naha, Okinawa: Forestry Bureau, Gov. of the Ryukyu Islands, 1954.
MLA (9th ed.) CitationWalker, Egbert H. Important Trees of the Ryukyu Islands: = Ryūkyū Jūyō Jumokushi. Forestry Bureau, Gov. of the Ryukyu Islands, 1954.
Warning: These citations may not always be 100% accurate.