APA (7e ed.) Bronvermelding

Não informado. (1987). Key abstracts. Institute of Electrical and Electronics Engineers.

Chicago (17e ed.) Bronvermelding

Não informado. Key Abstracts. Piscataway, NJ: Institute of Electrical and Electronics Engineers, 1987.

MLA (8e ed.) Bronvermelding

Não informado. Key Abstracts. Institute of Electrical and Electronics Engineers, 1987.

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