Pierce Heather. (2004). Persuasive Proposals and Presentations: 24 Lessons for Writing Winners (In lần thứ 1.). American: McGraw -Hill.
Chicago-стиль цитированияPierce Heather. Persuasive Proposals and Presentations: 24 Lessons for Writing Winners. In lần thứ 1. American: McGraw -Hill, 2004.
MLA-цитированиеPierce Heather. Persuasive Proposals and Presentations: 24 Lessons for Writing Winners. In lần thứ 1. American: McGraw -Hill, 2004.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.