APA
KNIGHT W F JACKSON, . (1968). VIRGIL. U.S.A: PENGUIN BOOKS.
Chicago
KNIGHT W F JACKSON, . 1968. VIRGIL. U.S.A: PENGUIN BOOKS.
Harvard
KNIGHT W F JACKSON, . (1968). VIRGIL. U.S.A: PENGUIN BOOKS.
MLA
KNIGHT W F JACKSON, . VIRGIL. U.S.A: PENGUIN BOOKS. 1968.