Earth Science Curriculum Project. (1965). Investigating the earth: Laboratory manual (rev. 1965.). Smith-Brooks Printing.
Citazione stile Chigago Style (17a edizione)Earth Science Curriculum Project. Investigating the Earth: Laboratory Manual. rev. 1965. Colorado, BO: Smith-Brooks Printing, 1965.
Citatione MLA (9a ed.)Earth Science Curriculum Project. Investigating the Earth: Laboratory Manual. rev. 1965. Smith-Brooks Printing, 1965.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.