APA (7th ed.) Citation

223183 Hills, E. S., Abdullah, I., & Harun, Z. (1993). Unsur-unsur geologi struktur. Kuala Lumpur : DBP.

Chicago Style (17th ed.) Citation

223183 Hills, Edwin Sherbon, Ibrahim Abdullah, and Zaiton Harun. Unsur-unsur Geologi Struktur. Kuala Lumpur : DBP, 1993.

MLA (9th ed.) Citation

223183 Hills, Edwin Sherbon, et al. Unsur-unsur Geologi Struktur. Kuala Lumpur : DBP, 1993.