Ettema, R., & Mutel, C. F. (2014). Hans Albert Einstein: His life as a pioneering engineer. American Society of Civil Engineers.
Цитирование в стиле Чикаго (17-е изд.)Ettema, R., и Cornelia Fleischer Mutel. Hans Albert Einstein: His Life as a Pioneering Engineer. Reston, Virginia: American Society of Civil Engineers, 2014.
Цитирование MLA (9-е изд.)Ettema, R., и Cornelia Fleischer Mutel. Hans Albert Einstein: His Life as a Pioneering Engineer. American Society of Civil Engineers, 2014.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.