Claridades, A. T. (2021). The revised implementing rules and regulations of the national building code of the Philippines annotated (2021 edition.). Central Book Supply,Inc.
Lua i Stíl Chicago (17ú heag.)Claridades, Alvin T. The Revised Implementing Rules and Regulations of the National Building Code of the Philippines Annotated. 2021 edition. Quezon City: Central Book Supply,Inc, 2021.
Lua MLA (9ú heag.)Claridades, Alvin T. The Revised Implementing Rules and Regulations of the National Building Code of the Philippines Annotated. 2021 edition. Central Book Supply,Inc, 2021.
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