Harvard Bus. School. (2012). HBR Guide to Better Business Writing. Harvard Bus. School.
Цитирование в стиле Чикаго (17-е изд.)Harvard Bus. School. HBR Guide to Better Business Writing. Boston: Harvard Bus. School, 2012.
Цитирование MLA (9-е изд.)Harvard Bus. School. HBR Guide to Better Business Writing. Harvard Bus. School, 2012.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.