APA Citation

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

Chicago Style Citation

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

MLA Citation

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

Warning: These citations may not always be 100% accurate.