Philippines. Bureau of Standards. (1978). Standardization of the preservative treatment of timber poles. s.n.
Citazione stile Chigago Style (17a edizione)Philippines. Bureau of Standards. Standardization of the Preservative Treatment of Timber Poles. [S.l: s.n, 1978.
Citatione MLA (9a ed.)Philippines. Bureau of Standards. Standardization of the Preservative Treatment of Timber Poles. s.n, 1978.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.