National Book Store Editorial Board. (1980). Philippine engineering laws (1980 rev. ed. with 1984 supplement.). National Book Store.
Citace podle Chicago (17th ed.)National Book Store Editorial Board. Philippine Engineering Laws. 1980 rev. ed. with 1984 supplement. Manila: National Book Store, 1980.
Citace podle MLA (9th ed.)National Book Store Editorial Board. Philippine Engineering Laws. 1980 rev. ed. with 1984 supplement. National Book Store, 1980.
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