Pierce Heather. (2004). Persuasive Proposals and Presentations: 24 Lessons for Writing Winners (In lần thứ 1.). American: McGraw -Hill.
استشهاد بنمط شيكاغوPierce Heather. Persuasive Proposals and Presentations: 24 Lessons for Writing Winners. In lần thứ 1. American: McGraw -Hill, 2004.
MLA استشهادPierce Heather. Persuasive Proposals and Presentations: 24 Lessons for Writing Winners. In lần thứ 1. American: McGraw -Hill, 2004.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.