APA (7th ed.) Citation

Project, Earth Science Curriculum. (1965). Investigating the earth: Text (revised 1965.). Smith-Brooks Printing.

Chicago Style (17th ed.) Citation

Project, Earth Science Curriculum. Investigating the Earth: Text. revised 1965. Colorado, BO: Smith-Brooks Printing, 1965.

MLA (9th ed.) Citation

Project, Earth Science Curriculum. Investigating the Earth: Text. revised 1965. Smith-Brooks Printing, 1965.