Gaya APA

inc., G. (1967). The book of popular science volume 7 the universe, the earth, plant life, animal life, man, health, matter & energy, industry, transportation, communication, science through the ages, projects & experiments . : grolier.

Gaya MLA

inc., Grolier. "The book of popular science volume 7 the universe, the earth, plant life, animal life, man, health, matter & energy, industry, transportation, communication, science through the ages, projects & experiments". : grolier, 1967. Text.