Betta pugnax (Cantor, 1849)
| On the British species of Mugil A Günther (1861) Annals and Magazine of Natural History 7: 345-352 | |
| List of the reptiles, batrachians, and freshwater fishes collected by Professor Moesch and Mr. Iversein in the district of Deli, Sumatra G A Boulenger (1890) Proc. Zool. Soc. London 1890: 31-40 | |
| Sur une collection de poissons recueillie par M. Chaper, a Bornéo L L Vaillant (1893) Bulletin de la Société Zoologique de France 18: 55-62 | |
| Résultats zoologiques de l’expédition scientifique Néerlandaise au Bornéo central. Poissons L L Vaillant (1902) Notes van de Leyden Museum 24: 1-166 | |
| Fische von Sumatra, gesammelt von Herrn G. Schneider (1904) Revue Suisse De Zoologie 12: 451-493 | |
| Nueva especie de Xiphidium de las Azores I Bolivar (1905) Boletín de la Real Sociedad Española de Historia Natural 5: 180-181 | |
| The Asiatic Fishes of: the Family Anabantidne C Tate Eegan (1909) Proceedings of The Zoological Society of London 1909: 767-787 | |
| June 8, 1915 S F Harmer (1915) Proceedings of The Zoological Society of London 1915: 534-539 | |
| A new anabantid fish of the genus Betta from Johore G S Myers (1935) Proceedings of The Biological Society of Washington 48: 25-26 | |
| THE EVOLUTION AND INTERRELATIONSHIPS OF THE ACTINOPTERYGIAN FISHES G V Lauder and K L Liem (1983) Bulletin of The Museum of Comparative Zoology 150(3): 95-197 | |
| The Freshwater Fishes of Western Borneo (Kalimantan Barat, Indonesia) Tyson R Roberts (1989) Memoirs of the California Academy of Sciences 14: 1-210 |