APA

Schuster R. M., Steere W. C., .Hygrolejeunea alaskana SP.N., a critical endemic of Northern Alaska. : .

Chicago

Schuster R M, Steere William Campbell, .Hygrolejeunea alaskana SP.N., a critical endemic of Northern Alaska. : .

Harvard

Schuster R. M., Steere W. C., .Hygrolejeunea alaskana SP.N., a critical endemic of Northern Alaska. : .

MLA

Schuster R M, Steere William Campbell, .: . .