Παραπομπή σε μορφή APA (7η εκδ.)

Não informado. (1934). Highways, Bridges and Engineering Works. IPC Building and Contract Journals.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Não informado. Highways, Bridges and Engineering Works. London: IPC Building and Contract Journals, 1934.

Παραπομπή σε μορφή MLA (8th εκδ.)

Não informado. Highways, Bridges and Engineering Works. IPC Building and Contract Journals, 1934.

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