Earth Science Curriculum Project. (1965). Investigating the earth: Teacher's guide 2 (rev. 1965.). Johnson Publishing.
Chicagoスタイル(17版)引用形式Earth Science Curriculum Project. Investigating the Earth: Teacher's Guide 2. rev. 1965. Colorado, BO: Johnson Publishing, 1965.
MLA(9版)引用形式Earth Science Curriculum Project. Investigating the Earth: Teacher's Guide 2. rev. 1965. Johnson Publishing, 1965.
警告: この引用は必ずしも正確ではありません.