APA (7th ed.) Citation

Al-Barrak, A. A., & unknown. (1993). Causes of Contractors’ Failures in Saudi Arabia.

Chicago Style (17th ed.) Citation

Al-Barrak, Adel Abdulaziz, and unknown. Causes of Contractors’ Failures in Saudi Arabia. 1993.

MLA (9th ed.) Citation

Al-Barrak, Adel Abdulaziz, and unknown. Causes of Contractors’ Failures in Saudi Arabia. 1993.

Warning: These citations may not always be 100% accurate.