Cita APA

Earth Science Curriculum Project. (1964). Investigating the earth: Teacher's guide (rev. ed.). Smith-Brooks Printing.

Citación estilo Chicago

Earth Science Curriculum Project. Investigating the Earth: Teacher's Guide. rev. ed. Colorado, BO: Smith-Brooks Printing, 1964.

Cita MLA

Earth Science Curriculum Project. Investigating the Earth: Teacher's Guide. rev. ed. Smith-Brooks Printing, 1964.