Elsworth, A. (2001). Watercolor skills workbook: Develop your artistic skills in ten easy lessons. North Light Books.
芝加哥风格引文Elsworth, Anne. Watercolor Skills Workbook: Develop Your Artistic Skills in Ten Easy Lessons. Cincinnati: North Light Books, 2001.
MLA引文Elsworth, Anne. Watercolor Skills Workbook: Develop Your Artistic Skills in Ten Easy Lessons. North Light Books, 2001.
警告：这些引文格式不一定是100％准确.