Taxon - Odkazy a literatura
Novikoff A., Barabasz-Krasny B. (2015): System of Embryophytes [https://phytomorphology.org/personal-inf...], Plant Systematics: 23-63. Liga-Pres [jako Protocephalozia (Spruce) K.I. Goebel]Datum citace: 23. prosinec 2019
The Interim Register of Marine and Nonmarine Genera [1088807]
Rees, T. (compiler): The Interim Register of Marine and Nonmarine Genera [https://www.irmng.org] [jako Protocephalozia (Spruce) K.I. Goebel, 1893]
Datum citace: 7. únor 2020
Söderström L. et al. (2016): World checklist of hornworts and liverworts, PhytoKeys 59: 1–828 [jako Protocephalozia (Spruce) K.I.Goebel]Datum citace: 1. duben 2020