APA (7. basım) Alıntı

Earth Works Group (Estados Unidos) & Earth Works Group. (1990). 50 simple things kids can do to save the earth. Andrews and McMeel.

Chicago Style (17. basım) Atıf

Earth Works Group (Estados Unidos) ve Earth Works Group. 50 Simple Things Kids Can Do to Save the Earth. Kansas City: Andrews and McMeel, 1990.

MLA (9th ed.) Atıf

Earth Works Group (Estados Unidos) ve Earth Works Group. 50 Simple Things Kids Can Do to Save the Earth. Andrews and McMeel, 1990.