APA引文

Paul J. J. Welfens, E. W. (2017). Digital Excellence. Springer.

Chicago Style Citation

Paul J. J. Welfens, Ellen Walther-Klaus. Digital Excellence. Springer, 2017.

MLA引文

Paul J. J. Welfens, Ellen Walther-Klaus. Digital Excellence. Springer, 2017.

警告：這些引文格式不一定是100％准確.