Gay, R. (2007). Online Marketing. HarperCollins Publishers.
芝加哥风格引文Gay, Richard. Online Marketing. New York: HarperCollins Publishers, 2007.
MLA引文Gay, Richard. Online Marketing. HarperCollins Publishers, 2007.
警告:这些引文格式不一定是100%准确.
Gay, R. (2007). Online Marketing. HarperCollins Publishers.
芝加哥风格引文Gay, Richard. Online Marketing. New York: HarperCollins Publishers, 2007.
MLA引文Gay, Richard. Online Marketing. HarperCollins Publishers, 2007.