Rujukan

WikiPedia: Pelincir http://www.widman.biz/Seleccion/Viscosidad/Degrees... http://www.widman.biz/Seleccion/Viscosidad/SAE-ISO... http://www.advceramics.com/geac/downloads/document... http://translate.google.com/translate?u=https://en... http://www.practicingoilanalysis.com/article_detai... http://www.practicingoilanalysis.com/article_detai... http://www.whnet.com/4x4/oil.html http://prpm.dbp.gov.my/ http://pubs.acs.org/cgi-bin/article.cgi/esthag/200... http://www.api.org/certifications/engineoil/pubs/i...