Wilkie, H. (2003). The hidden profit center: A tale of profits lost and found through communication. Toronto, ON: MHW Communications.
Чикагска система за цитиранеWilkie, Helen. The Hidden Profit Center: A Tale of Profits Lost and Found Through Communication. Toronto, ON: MHW Communications, 2003.
MLA формат за цитиранеWilkie, Helen. The Hidden Profit Center: A Tale of Profits Lost and Found Through Communication. Toronto, ON: MHW Communications, 2003.
Внимание: Тези цитати може да не са 100% точни.