* "Makere of the Roman Empire" (2006)
* "Mithras:The Secret God" (2007)
* "Keiserens nye vei:The Power of Roma Across Europe" (2009)
* "Trajan:The Optimus Princeps" (2010)
* "Roma's Quest for the North:Europe Before the Vikings" (2011)
* "The Rise of Christianity:How a Small Sect Grow into a World Religion" (2013)
* "The Oxford Handbook of Roman Studies" (redigert, 2014)
* "The Barbarian Empires of the Steppes:From Attila to Kublai Khan" (2017)
* "The Power of Rome:From Republic to Empire" (2018)
* "The Silk Road:A History" (2021)
Artikler og essays
* "Den romerske hæren og de puniske krigene" (2005)
* "Mithras in the Roman World:A Reappraisal" (2006)
* "Via Flaminia:Romas første store motorvei" (2007)
* "Trajans søyle og Dacian Wars" (2008)
* "The Roman Frontier in Europe:From the Rhine to the Donau" (2009)
* "Ediktet fra Milano og kristendommens triumf" (2010)
* "The Oxford Handbook of Roman Studies:A Review" (2011)
* "The Huns:A New History" (2012)
* "The Visigoths:A History" (2013)
* "The Lombards:A History" (2014)
Andre verk
* "The Romans" (2015) (TV-dokumentarserie)
* "The Celts" (2016) (TV-dokumentarserie)
* "The Vikings" (2017) (TV-dokumentarserie)
* "Silkeveien" (2018) (TV-dokumentarserie)