Cita APA

Ward, C. R. (1972). This blue planet: Introduction to physical science. Boston: Little, Brown and Company.

Citación estilo Chicago

Ward, Charlotte R. This Blue Planet: Introduction to Physical Science. Boston: Little, Brown and Company, 1972.

Cita MLA

Ward, Charlotte R. This Blue Planet: Introduction to Physical Science. Boston: Little, Brown and Company, 1972.

Precaución: Estas citas no son 100% exactas.