Syed Hakimi Sakuma Syed Ahmad. (2002). Remediation studies on laterite soil layer contaminated with oil sludge using in situ surfactant flushing. Fakulti Sains Dan Teknologi, Universiti Kebangsaan Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Syed Hakimi Sakuma Syed Ahmad. Remediation Studies on Laterite Soil Layer Contaminated with Oil Sludge Using in Situ Surfactant Flushing. Bangi: Fakulti Sains Dan Teknologi, Universiti Kebangsaan Malaysia, 2002.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Syed Hakimi Sakuma Syed Ahmad. Remediation Studies on Laterite Soil Layer Contaminated with Oil Sludge Using in Situ Surfactant Flushing. Fakulti Sains Dan Teknologi, Universiti Kebangsaan Malaysia, 2002.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.