APA
Grierson P., . (1968). Phocas to Theodosius III, 602-717. Pt. 1 : Phocas and Heraclius, (602-641). Washington: Dumbarton Oaks Center for Byzantine Studies.
Chicago
Grierson Philip, . 1968. Phocas to Theodosius III, 602-717. Pt. 1 : Phocas and Heraclius, (602-641). Washington: Dumbarton Oaks Center for Byzantine Studies.
Harvard
Grierson P., . (1968). Phocas to Theodosius III, 602-717. Pt. 1 : Phocas and Heraclius, (602-641). Washington: Dumbarton Oaks Center for Byzantine Studies.
MLA
Grierson Philip, . Phocas to Theodosius III, 602-717. Pt. 1 : Phocas and Heraclius, (602-641). Washington: Dumbarton Oaks Center for Byzantine Studies. 1968.
