Citazione Stile APA (7a Edizione)

Earth Science Curriculum Project. (1965). Investigating the earth: Teacher's guide 2 (rev. 1965.). Johnson Publishing.

Citazione stile Chigago Style (17a edizione)

Earth Science Curriculum Project. Investigating the Earth: Teacher's Guide 2. rev. 1965. Colorado, BO: Johnson Publishing, 1965.

Citatione MLA (9a ed.)

Earth Science Curriculum Project. Investigating the Earth: Teacher's Guide 2. rev. 1965. Johnson Publishing, 1965.