The fishes of North and Middle America: a descriptive catalogue of the species of fish-Iike vertebrates found in the waters of North America, north of the Isthmus of Panama. Part III. Bulletin of the United States National Museum, 47(3), 2183a–3136
Check list of the fishes and fishlike vertebrates of North and Middle America north of the northern boundary of Venezuela and Colombia. Report of the United States Fish Commission, 1928(2), 1–670
Eastern Pacific expeditions of the New York Zoological Society. XXVIII. Fishes from the tropical eastern Pacific. [From Cedros Island, Lower California, south to the Galápagos Islands and northern Peru.] Part 3. Rays, Mantas and Chimaeras. Zoologica, Scientific Contributions of the New York Zoological Society, 26(3), 245–280
Observaciones sobre los elasmobranquios del Ecuador. Revista de Biología Marina y Oceanografía, 5(2), 85–110
A catalogue of the type specimens of Recent fishes in the Natural History Museum of Stanford University. Stanford Ichthyological Bulletin, 5(1), 1-168
Taxonomic review, phylogeny, and geographical population structure of the sawfishes (Chondrichthyes, Pristiformes). PhD Thesis, Iowa State University
Guía para la identificación de especies de tiburones, rayas y quimeras de Colombia. Bogotá, D.C.: Colombia. Ministerio de Ambiente y Desarrollo Sostenible; Corporación para el Desarrollo, Sostenible del Archipiélago de San Andrés, Providencia y Santa Catalina – CORALINA; Gobernación de San Andrés, Providencia y Santa Catalina, Fundación SQUALUS, 2011.