Cita APA

(1981). Basic english for students of natural and applied sciences (1. ed., 1. reimpr.). San José, C. R.: UCR.

Citación estilo Chicago

Basic English for Students of Natural and Applied Sciences. 1. ed., 1. reimpr. San José, C. R.: UCR, 1981.

Cita MLA

Basic English for Students of Natural and Applied Sciences. 1. ed., 1. reimpr. San José, C. R.: UCR, 1981.