Fisheries and Aquaculture Department. "Psephurus gladius (Martens, 1862)". Species Fact Sheet. Food and Agriculture Organization of the United States. مؤرشف من الأصل في 2015-07-07. اطلع عليه بتاريخ 2014-06-10.
illinois.edu
inhs.illinois.edu
"INHS padfish". Prairie Research Institute, University of Illinois at Urbana-Champaign. مؤرشف من الأصل في 2014-05-29. اطلع عليه بتاريخ 2014-05-28.
William Eschmeyer; Jon D. Fong (23 Dec 2011). ""Pisces""(PDF). Animal Biodiversity: An Outline of Higher-level Classification and Survey of Taxonomic Richness (بالإنجليزية). 3148 (1): 26–38. ISBN:978-1-86977-849-1. ISSN:1175-5334. QID:Q19402385.
"INHS padfish". Prairie Research Institute, University of Illinois at Urbana-Champaign. مؤرشف من الأصل في 2014-05-29. اطلع عليه بتاريخ 2014-05-28.
Fisheries and Aquaculture Department. "Psephurus gladius (Martens, 1862)". Species Fact Sheet. Food and Agriculture Organization of the United States. مؤرشف من الأصل في 2015-07-07. اطلع عليه بتاريخ 2014-06-10.
William Eschmeyer; Jon D. Fong (23 Dec 2011). ""Pisces""(PDF). Animal Biodiversity: An Outline of Higher-level Classification and Survey of Taxonomic Richness (بالإنجليزية). 3148 (1): 26–38. ISBN:978-1-86977-849-1. ISSN:1175-5334. QID:Q19402385.
William Eschmeyer; Jon D. Fong (23 Dec 2011). ""Pisces""(PDF). Animal Biodiversity: An Outline of Higher-level Classification and Survey of Taxonomic Richness (بالإنجليزية). 3148 (1): 26–38. ISBN:978-1-86977-849-1. ISSN:1175-5334. QID:Q19402385.