Simonsen, R. (1974). The diatom plankton of the Indian Ocean Expedition of R/V Meteor 1964-5. "Meteor. <em>Forschungsergebnisse, Reihe D: Biologie.</em> 19: 1-107. page(s): p. 48; pl. 32, fig. 1-4 [details]
Kociolek, J.P.; Blanco, S.; Coste, M.; Ector, L.; Liu, Y.; Karthick, B.; Kulikovskiy, M.; Lundholm, N.; Ludwig, T.; Potapova, M.; Rimet, F.; Sabbe, K.; Sala, S.; Sar, E.; Taylor, J.; Van de Vijver, B.; Wetzel, C.E.; Williams, D.M.; Witkowski, A.; Witkowski, J. (2026). DiatomBase. Haslea gretharum Simonsen, 1974. Accessed at: https://www.diatombase.org/aphia.php?p=taxdetails&id=620428 on 2026-07-23
original descriptionSimonsen, R. (1974). The diatom plankton of the Indian Ocean Expedition of R/V Meteor 1964-5. "Meteor. <em>Forschungsergebnisse, Reihe D: Biologie.</em> 19: 1-107. page(s): p. 48; pl. 32, fig. 1-4 [details]