Cita APA (7a ed.)

Campbell, S. W. (1953). On the geographical distribution of Arctic Bryophytes.

Cita Chicago Style (17a ed.)

Campbell, Steve William. On the Geographical Distribution of Arctic Bryophytes. -, 1953.

Cita MLA (8a ed.)

Campbell, Steve William. On the Geographical Distribution of Arctic Bryophytes. 1953.