APA (7th ed.) Citation

Parker, H. M. D. (1958). The Roman legions. W. Heffer.

Chicago Style (17th ed.) Citation

Parker, Henry Michael Denne. The Roman Legions. Cambridge [Eng.]: W. Heffer, 1958.

MLA (9th ed.) Citation

Parker, Henry Michael Denne. The Roman Legions. W. Heffer, 1958.

Warning: These citations may not always be 100% accurate.