For example, if you're referring to Philip Converse's "Marketing: An Integrated Approach", his definition focuses on the process of creating and delivering value to customers. He emphasizes the importance of understanding customer needs and developing strategies to meet those needs effectively.
Huegy's "Marketing: Principles and Methods" might have a slightly different perspective. Please provide more information about the specific book or work you're interested in.
Once I know which of their works you're looking at, I can provide a more accurate and helpful answer.