You can find digital copies available for controlled digital lending on the Internet Archive John P. Hayes directory University Libraries:

Most modern books mention RTL in passing. Hayes lives there. He uses a clear, consistent notation to show how data moves from the Memory Address Register to the Memory Buffer Register to the Instruction Register. Once you read Hayes on RTL, the "Fetch-Decode-Execute" cycle becomes a physical reality, not just a diagram.

Which specific (e.g., pipelining, cache mapping) are you currently studying?