Earth Science Curriculum Project. (1967). Investigating the earth: Earth Science Curriculum Project. Houghton Mifflin.
Style de citation Chicago (17e éd.)Earth Science Curriculum Project. Investigating the Earth: Earth Science Curriculum Project. New York: Houghton Mifflin, 1967.
Style de citation MLA (9e éd.)Earth Science Curriculum Project. Investigating the Earth: Earth Science Curriculum Project. Houghton Mifflin, 1967.
Attention : ces citations peuvent ne pas être correctes à 100%.