APA (7e ed.) Bronvermelding

Williamson, W. C. (1887). A monograph on the morphology and histology of Stigmaria ficoides. Printed for the Palæontographical society.

Chicago (17e ed.) Bronvermelding

Williamson, William Crawford. A Monograph on the Morphology and Histology of Stigmaria Ficoides. London: Printed for the Palæontographical society, 1887.

MLA (8e ed.) Bronvermelding

Williamson, William Crawford. A Monograph on the Morphology and Histology of Stigmaria Ficoides. Printed for the Palæontographical society, 1887.