Affiliation
- Yale University3
- Arizona State University2
- City University of Hong Kong2
- College of Southern Nevada2
- College of the Sequoias2
- DOAB (Directory of Open Access Books)2
- Florida State University2
- Franklin W. Olin College of Engineering2
- Furman University2
- Harvard University2
- Hong Kong Baptist University2
- InTechOpen2
- Lakeland Community College2
- Lorain County Community College2
- National Central Library 國家圖書館2
- New York University2
- North Carolina State University2
- Oklahoma State University2
- Pembroke, North Carolina2
- Pierce College2