That deals with eschatology. Is there something that deals with dispensationalism in general?
Yes, the book broadly deals with eschatology.
It has been helpful to understand how related dispensationalism is to eschatology, e.g. the modern dispensational premillennial view.
Chapter Two of "A Case for Amillennialism" is titled, "A Survey of Eschatological Views," and begins with a subheading "Dispensationalism." Chapter Three has a subheading "The Dispensational Hermeneutic."
This approach has been very helpful to me in separating dispensationalism from the real mccoy, covenant theology, the general historic position of the church.
It might also be helpful explaining to someone studying this that the term "a" millennialism did not exist historically because it was "the only game in town." There were some variations within it, and there were for periods where a classical premillennialism (not modern dispensational premillenialism) existed. But in the main, a "realized millennium," was the standard view of the church- the millennium beginning when Christ ascended into Heaven, a real reign, but a spiritual one that exists now, and until our Lord's return.
So, historically there was not the central debate that we have in this generation-
whether there is a political kingdom coming for the nation of Israel versus whether Christ rules "for the millenia" right now over all the nations of the earth, which await His judgment, and the consummation of all things.
Dispensationalism, of course denies the present reality of Christ's reign, and says it is only future- usually something that sounds sophisticated like, "an earthly kingdom for an earthly people." It holds that the millennium is only a physical, political kingdom based in one nation, Israel.
Implicitly, dispensationalism really argues for a fourth Temple in Jerusalem (because Jesus was the third). This is another discussion that might be helpful from
A Case for Amillennialism.
The tone of the book is helpful and informed, as the author was formerly dispensational in his view. He understands and contrasts both systems, in a fair and masterful way throughout.
Two cents.