APA

Evans M., .Interspecific relationships in the Polypodiun pectinatum - Plumula complex. : .

Chicago

Evans Murray, .Interspecific relationships in the Polypodiun pectinatum - Plumula complex. : .

Harvard

Evans M., .Interspecific relationships in the Polypodiun pectinatum - Plumula complex. : .

MLA

Evans Murray, .: . .