Olago, S. (1997). Breaking into the 21st century: A business guide for Kenyans. Covenant.
芝加哥风格引文Olago, Sam. Breaking into the 21st Century: A Business Guide for Kenyans. Nairobi: Covenant, 1997.
MLA引文Olago, Sam. Breaking into the 21st Century: A Business Guide for Kenyans. Covenant, 1997.
警告：这些引文格式不一定是100％准确.