APA
Busnel R. . C. A., . (1976). Whistled Languages. : Springer - Verlag.
Chicago
Busnel R.G Classe A, . 1976. Whistled Languages. : Springer - Verlag.
Harvard
Busnel R. . C. A., . (1976). Whistled Languages. : Springer - Verlag.
MLA
Busnel R.G Classe A, . Whistled Languages. : Springer - Verlag. 1976.
