APA (7e ed.) Bronvermelding

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.

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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.