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Rudman, P.; Da Costa, E. W. B.; Gay, F. J.; Wetherly, A. H. (8 March 1958). "Relationship of tectoquinone to durability in Tectona grandis". Nature. 181 (4610): 721–722. Bibcode:1958Natur.181..721R. doi:10.1038/181721b0. S2CID4159998.
Rudman, P.; Da Costa, E. W. B.; Gay, F. J.; Wetherly, A. H. (8 March 1958). "Relationship of tectoquinone to durability in Tectona grandis". Nature. 181 (4610): 721–722. Bibcode:1958Natur.181..721R. doi:10.1038/181721b0. S2CID4159998.
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Rudman, P.; Da Costa, E. W. B.; Gay, F. J.; Wetherly, A. H. (8 March 1958). "Relationship of tectoquinone to durability in Tectona grandis". Nature. 181 (4610): 721–722. Bibcode:1958Natur.181..721R. doi:10.1038/181721b0. S2CID4159998.