Textbooks with supplemental materials

[Runa]

Hello! I've linked an example of what I mean, but what is considered general best practice when it comes to textbooks with supplemental materials? There are separate entries of this book with CDs, access codes, etextbooks, lectures, etc.

Should they be combined? They all have the same base source text, just different combinations of supplementary material. Please advise!

[rivka, Former Moderator]

It depends on what else is included. Access codes and e-versions of the same text would certainly not be a reason to keep them separate. Neither would a CD that contains some of the same content as the textbook, or lectures based on its content. But sometimes the "supplemental" materials are entire additional books. Those would be a reason to keep an edition separate from those which do not also include that other book.

[Runa]

rivka wrote: "It depends on what else is included. Access codes and e-versions of the same text would certainly not be a reason to keep them separate. Neither would a CD that contains some of the same content as..."

Thank you, Rivka! Very helpful!