Pérez de Barradas: (1937) pp 21–22, Lámina 15;
Nachtigall: (1955) Lámina XXX, No. 26–27;
Cháves/Puerta: (1986) pp 141, 143, 145, 191;
Sotomayor/Uribe: p 257;
Dellenback: pp 451-52, drawings p 835; (2012) p281, illus p 180 #23;
(+) Go to the Bibliography