Cita APA

Brown Gfrorer, B. K. (1981). Basic English: For students of natural and applied sciences (2. edition.). San José, C.R.: Editorial Universidad de Costa Rica.

Citación estilo Chicago

Brown Gfrorer, Bonnie Kay. Basic English: For Students of Natural and Applied Sciences. 2. edition. San José, C.R.: Editorial Universidad de Costa Rica, 1981.

Cita MLA

Brown Gfrorer, Bonnie Kay. Basic English: For Students of Natural and Applied Sciences. 2. edition. San José, C.R.: Editorial Universidad de Costa Rica, 1981.