APA (7th ed.) Citation

Wilkin, J. P. (2017). How Large Is the "Public Domain"? A Comparative Analysis of Ringer's 1961 Copyright Renewal Study and HathiTrust CRMS Data.

Chicago Style (17th ed.) Citation

Wilkin, John P. How Large Is the "Public Domain"? A Comparative Analysis of Ringer's 1961 Copyright Renewal Study and HathiTrust CRMS Data. 2017.

MLA (9th ed.) Citation

Wilkin, John P. How Large Is the "Public Domain"? A Comparative Analysis of Ringer's 1961 Copyright Renewal Study and HathiTrust CRMS Data. 2017.

Warning: These citations may not always be 100% accurate.