APA
Guardiola M. L., Villaveces J. L. & Violini G. (1990). Status and problems of science in Latin America and the Caribean. Bogotá: Guardiola.
Chicago
Guardiola M L, Villaveces José Luis and Violini G. 1990. Status and problems of science in Latin America and the Caribean. Bogotá: Guardiola.
Harvard
Guardiola M. L., Villaveces J. L. and Violini G. (1990). Status and problems of science in Latin America and the Caribean. Bogotá: Guardiola.
MLA
Guardiola M L, Villaveces José Luis and Violini G. Status and problems of science in Latin America and the Caribean. Bogotá: Guardiola. 1990.