Jensen, P. B. (1949). Casual plant- geography. Munksgaard.
Cita Chicago Style (17a ed.)Jensen, P. Boysen. Casual Plant- Geography. Kobennavn: Munksgaard, 1949.
Cita MLA (9a ed.)Jensen, P. Boysen. Casual Plant- Geography. Munksgaard, 1949.
Precaución: Estas citas no son 100% exactas.