APA (7e ed.) Bronvermelding

Wagner, W. H., & Johnson, D. M. (1981). Natural history of the Ebony Spleenwort, Asplenium platyneuron (Aspleniaceae), in the Great Lakes area. Zenodo.

Chicago (17e ed.) Bronvermelding

Wagner, Warren H.‏,‏, en David M. Johnson. Natural History of the Ebony Spleenwort, Asplenium Platyneuron (Aspleniaceae), in the Great Lakes Area. Zenodo, 1981.

MLA (9e ed.) Bronvermelding

Wagner, Warren H.‏,‏, en David M. Johnson. Natural History of the Ebony Spleenwort, Asplenium Platyneuron (Aspleniaceae), in the Great Lakes Area. Zenodo, 1981.