APA (7e ed.) Bronvermelding

Não informado. (1975). Key abstracts. Institution of Electrical Engineers.

Chicago (17e ed.) Bronvermelding

Não informado. Key Abstracts. London: Institution of Electrical Engineers, 1975.

MLA (8e ed.) Bronvermelding

Não informado. Key Abstracts. Institution of Electrical Engineers, 1975.

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