APA (7e ed.) Bronvermelding

Não informado. (1958). Trends: German constructional engineering for export. Elsner.

Chicago (17e ed.) Bronvermelding

Não informado. Trends: German Constructional Engineering for Export. Darmstadt, Alemanha: Elsner, 1958.

MLA (8e ed.) Bronvermelding

Não informado. Trends: German Constructional Engineering for Export. Elsner, 1958.

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