APA (7th ed.) Citation

(1986). Let's discover the world of machines (Rev. ed.). Raintree Publishers.

Chicago Style (17th ed.) Citation

Let's Discover the World of Machines. Rev. ed. Milwaukee: Raintree Publishers, 1986.

MLA (9th ed.) Citation

Let's Discover the World of Machines. Rev. ed. Raintree Publishers, 1986.