^del Hoyo, Josep. 28. Trinidad Piping-guan. del Hoyo, Josep; Elliott, Andrew & Sargatal, Jordi (editors) (编). Handbook of Birds of the World, Volume 2 (New World Vultures to Guineafowl). Barcelona: Lynx Edicions. 1994a: 353, Plate 32. ISBN 84-87334-15-6.
^del Hoyo, Josep. 29. Blue-throated Piping-guan. del Hoyo, Josep; Elliott, Andrew & Sargatal, Jordi (editors) (编). Handbook of Birds of the World, Volume 2 (New World Vultures to Guineafowl). Barcelona: Lynx Edicions. 1994a: 353, Plate 32. ISBN 84-87334-15-6.