Siddiqui, Q.A. (1971a) Early Tertiary Ostracoda of the family Trachyleberididae from West Pakistan. Bulletin of the British Museum (Natural History).Geology Suppl. 9, 1–98., available online athttps://www.biodiversitylibrary.org/part/310417[details] Available for editors
Brandão, S. N.; Antonietto, L. S.; Pereira, J. S.; Pereira, S. G. G.; Sá, H. A. B.; Praxedes, R. A.; Sabater, L. M., Santos, S.G.; Karanovic, I. (2025). World Ostracoda Database. Quadracythere directa Siddiqui, 1971 †. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=794307 on 2025-05-11
Marine Species Traits editorial board (2025). Marine Species Traits. Quadracythere directa Siddiqui, 1971 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=794307 on 2025-05-11
original descriptionSiddiqui, Q.A. (1971a) Early Tertiary Ostracoda of the family Trachyleberididae from West Pakistan. Bulletin of the British Museum (Natural History).Geology Suppl. 9, 1–98., available online athttps://www.biodiversitylibrary.org/part/310417[details] Available for editors
new combination referenceNeil, J. V. (1994). Miocene Ostracoda of the Trachyleberididae and Hemicytheridae from the Muddy Creel Area, South-Western Victoria. <em>Memoirs of the Museum of Victoria.</em> 54: 1-49., available online athttp://www.biodiversitylibrary.org/page/39767444#page/8/mode/1up[details] Available for editors