توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Malaysia. Jabatan Pengairan dan Saliran, Design Dimension Sdn. Bhd, & Ong, J. (1994). Mysterious caves of Langkawi, Malaysia. Dept. of Irrigation and Drainage, Ministry of Agriculture, Malaysia and Design Dimension Sdn. Bhd.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Malaysia. Jabatan Pengairan dan Saliran, Design Dimension Sdn. Bhd, و Johnny Ong. Mysterious Caves of Langkawi, Malaysia. Petaling Jaya: Dept. of Irrigation and Drainage, Ministry of Agriculture, Malaysia and Design Dimension Sdn. Bhd, 1994.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Malaysia. Jabatan Pengairan dan Saliran, et al. Mysterious Caves of Langkawi, Malaysia. Dept. of Irrigation and Drainage, Ministry of Agriculture, Malaysia and Design Dimension Sdn. Bhd, 1994.