Buku yang Dikarang by Ralph L. Boyer

Ashton-Kirk, Secret Agent

Detective Ashton-Kirk (Boxed-Set)

Ashton-Kirk, Criminologist

Ashton-Kirk, Investigator

Ashton-Kirk, Special Detective

Ashton-Kirk, Criminologist (Musaicum Murder Mysteries)

Ashton-Kirk, Secret Agent (Musaicum Murder Mysteries)

Ashton-Kirk, Special Detective (Musaicum Murder Mysteries)

The Mysteries of Detective Ashton-Kirk (Complete Series)