Raoul works for the public utilities department of a city, and he's currently researching rainwater harvesting techniques. He bo
rrowed a book on the topic from the library to use as a source in his research. How should he credit the source in his writing?
A He should email the publisher of the book to get quotes on the topic.
B. He should mention the title of the book in his writing.
C. He should list the book as a source on his reference page.
D. He should call the author to ask permission to use the book.
