APA

Alves R. J. V. A., . (1991). Field guide to the orchids of the serra de São José =. [S.l]: M. G. Brazil.

Chicago

Alves Ruy J Válka Alves, . 1991. Field guide to the orchids of the serra de São José =. [S.l]: M. G. Brazil.

Harvard

Alves R. J. V. A., . (1991). Field guide to the orchids of the serra de São José =. [S.l]: M. G. Brazil.

MLA

Alves Ruy J Válka Alves, . Field guide to the orchids of the serra de São José =. [S.l]: M. G. Brazil. 1991.