Ettema, R., & Mutel, C. F. (2014). Hans Albert Einstein: His life as a pioneering engineer. American Society of Civil Engineers.
芝加哥风格引文Ettema, R., 与 Cornelia Fleischer Mutel. Hans Albert Einstein: His Life as a Pioneering Engineer. Reston, Virginia: American Society of Civil Engineers, 2014.
MLA引文Ettema, R., 与 Cornelia Fleischer Mutel. Hans Albert Einstein: His Life as a Pioneering Engineer. American Society of Civil Engineers, 2014.
警告：这些引文格式不一定是100％准确.