Barber, T. X. (1993). The human nature of birds: A scientific discovery with startling implications. Penguin Books.
Chicago Style (17th ed.) CitationBarber, Theodore Xenophon. The Human Nature of Birds: A Scientific Discovery with Startling Implications. New York: Penguin Books, 1993.
MLA (9th ed.) CitationBarber, Theodore Xenophon. The Human Nature of Birds: A Scientific Discovery with Startling Implications. Penguin Books, 1993.
Warning: These citations may not always be 100% accurate.