APA (7e ed.) Bronvermelding

Não informado. (1952). Elementary school science bulletin. National Science Teachers Association.

Chicago (17e ed.) Bronvermelding

Não informado. Elementary School Science Bulletin. Washington: National Science Teachers Association, 1952.

MLA (8e ed.) Bronvermelding

Não informado. Elementary School Science Bulletin. National Science Teachers Association, 1952.

Let op: Deze citaties zijn niet altijd 100% accuraat.