APA (7th ed.) Citation

Baumgarten, R. H., & Childe, H. L. (1947). Manufacture of concrete roofing tiles (2d ed.). Concrete Publications.

Chicago Style (17th ed.) Citation

Baumgarten, R. H., and H. L. Childe. Manufacture of Concrete Roofing Tiles. 2d ed. London: Concrete Publications, 1947.

MLA (9th ed.) Citation

Baumgarten, R. H., and H. L. Childe. Manufacture of Concrete Roofing Tiles. 2d ed. Concrete Publications, 1947.