* Marshall, B A: "Crassus: A Political Biography" (Adolf M Hakkert, Amsterdam, 1976)* Ward, Allen Mason: "Marcus Crassus and the Late Roman Republic" (University of Missouri Press, 1977)* Twyman, Briggs L: critical review of Marshall 1976 and Ward 1977, "Classical Philology" 74 (1979), 356–61* Sampson, Gareth C: "The defeat of Rome: Crassus, Carrhae & the invasion of the east" (Pen & Sword Books, 2008) ISBN 978-1-84415-676-4.
* Marshall, B A: "Crassus: A Political Biography" (Adolf M Hakkert, Amsterdam, 1976)* Ward, Allen Mason: "Marcus Crassus and the Late Roman Republic" (University of Missouri Press, 1977)* Twyman, Briggs L: critical review of Marshall 1976 and Ward 1977, "Classical Philology" 74 (1979), 356-61* Sampson, Gareth C: "The defeat of Rome: Crassus, Carrhae & the invasion of the east" (Pen & Sword Books, 2008) ISBN 978-1-84415-676-4.