Παραπομπή APA

Wentworth-Shields, F. E., & Gray, W. (1948). Reinforced concrete piling. London: Concrete Publications Limited.

Παραπομπή Chicago Style

Wentworth-Shields, F. E., and W.S Gray. Reinforced Concrete Piling. London: Concrete Publications Limited, 1948.

Παραπομπή MLA

Wentworth-Shields, F. E., and W.S Gray. Reinforced Concrete Piling. London: Concrete Publications Limited, 1948.

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