Cita APA (7a ed.)

Groot, H. d. (1990). Allergens from cats and dogs. s.n.

Cita Chicago Style (17a ed.)

Groot, Hans de. Allergens from Cats and Dogs. [S.l.: s.n, 1990.

Cita MLA (9a ed.)

Groot, Hans de. Allergens from Cats and Dogs. s.n, 1990.