Cita APA (7th ed.)
Skeaping, J. R. (1952). The big tree of Mexico. Turnstile Press.
Cita Chicago (17th ed.)
Skeaping, John Rattenbury. The Big Tree of Mexico. London: Turnstile Press, 1952.
Cita MLA (9th ed.)
Skeaping, John Rattenbury. The Big Tree of Mexico. Turnstile Press, 1952.
Atenció: Aquestes cites poden no estar 100% correctes.