Tohutoro APA (7th ed.)
Perkins, P. H. (1997). Repair, protection and waterproofing of concrete structures (3rd ed.). E&FN Spon.
Tohutoru Kātū Chicago (17th ed.)
Perkins, Philip Harold. Repair, Protection and Waterproofing of Concrete Structures. 3rd ed. London ; New York: E&FN Spon, 1997.
Tohutoro MLA (9th ed.)
Perkins, Philip Harold. Repair, Protection and Waterproofing of Concrete Structures. 3rd ed. E&FN Spon, 1997.
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