APA
National College of Education, . (1985). Young People's Science Encyclopedia. U.S.A: National College of Education.
Chicago
National College of Education, . 1985. Young People's Science Encyclopedia. U.S.A: National College of Education.
Harvard
National College of Education, . (1985). Young People's Science Encyclopedia. U.S.A: National College of Education.
MLA
National College of Education, . Young People's Science Encyclopedia. U.S.A: National College of Education. 1985.
