Taxon - Odkazy a literatura
rod
šroubatka
Spirogyra Link in C. G. Nees
The Interim Register of Marine and Nonmarine Genera [1281139]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Spirogyra Link in C.G.D. Nees, 1820]
Datum citace: 9. prosinec 2019
Paleobiology Database [284795]
Paleobiology Database [https://paleobiodb.org/] [jako Spirogyra Link, 1820]
Datum citace: 8. leden 2020
Nováková S. (2002): Algal flora of subalpine peat bog pools in the Krkonoše Mts, Preslia 74(1): 45–56, 2002. [jako Spirogyra]