Author's The atheist's tragedy ...

The plays and poems of Cyril Tournour, [1972]

Oxford dictionary of national biography (Online), viewed on April 18, 2018: Tourneur, Cyril (died 1626; writer and soldier; author of the play The atheist's tragedy and the lost play The nobleman; the play The revenger's tragedy was first attributed to him in a 1656 play list but the evidence of Middleton's authorship is "overwhelming")