Cita APA (7a ed.)
Salomonsen, F. (1941). The black-winged Guillemot (Uria grylle mut. Motzfeldi Benicken): With 4 fig. in the text. Reitzel.
Cita Chicago Style (17a ed.)
Salomonsen, Finn. The Black-winged Guillemot (Uria Grylle Mut. Motzfeldi Benicken): With 4 Fig. in the Text. København: Reitzel, 1941.
Cita MLA (9a ed.)
Salomonsen, Finn. The Black-winged Guillemot (Uria Grylle Mut. Motzfeldi Benicken): With 4 Fig. in the Text. Reitzel, 1941.
Precaución: Estas citas no son 100% exactas.