Since its original publication (1993), this new edition (2020) has been updated with hundreds of pages of new information. It offers thorough, practical commentaries on every canon.
The Code of Canon Law: A Text and Commentary 
Compiled as a reference source for the law of the Catholic Church worldwide, this 1985 book includes authoritative commentary from over 20 experts in the field of canon law, significant biographic detail, and introductions. It incorporates the full text of the Canon Law in English translations approved by NCCB, a full cross-reference index, and certain tables for quick reference.
Exegetical Commentary on the Code of Canon Law
More than 100 canonical scholars have contributed to this extensive commentary on the Codex Iuris Canonici (5 vols. in 8 books, 2007). The commentary is a valuable research tool for canonists and offers an exhaustive, systematic exegesis of the code. Features of the new English edition include side-by-side Latin-English translation, research sources, cross-references and exhaustive commentary on each canon.
New Commentary on the Code of Canon Law
An entirely new and comprehensive commentary by canon lawyers from North America and Europe, with a revised English translation of the Code. Reflects the enormous developments in canon law since the publication of the first commentary by J. A. Coriden, Th. J. Green, and D. E. Heintschel In 1985.
A Commentary on the New Code of Canon Law 
Published in 1918 by Charles Augustine Bachofen, all eight volumes of this substantive commentary are available through Hathi Trust.
A Practical Commentary on the Code of Canon Law
Written by Stanislaus Woywod and revised by Callistus Smith, the library also has several editions of this standard reference work in print. The Hathi Trust scan is of the 1941 edition.