APA (7e ed.) Bronvermelding

Não informado. Data book electronic information series. Derivation and Tabulation Associates.

Chicago (17e ed.) Bronvermelding

Não informado. Data Book Electronic Information Series. San Diego, Calif: Derivation and Tabulation Associates.

MLA (8e ed.) Bronvermelding

Não informado. Data Book Electronic Information Series. Derivation and Tabulation Associates.

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