Style de citation APA (7e éd.)

Kooloos, J. G. M. (1986). Integration of feeding mechanisms in some Anseriform birds. s.n..

Style de citation Chicago (17e éd.)

Kooloos, Johannes Gijsberthus Maria. Integration of Feeding Mechanisms in Some Anseriform Birds. [Leiden?, Netherlands: s.n., 1986.

Style de citation MLA (8e éd.)

Kooloos, Johannes Gijsberthus Maria. Integration of Feeding Mechanisms in Some Anseriform Birds. s.n., 1986.