Cita APA (7a ed.)

TOMPKINS ROBERT. (1994). OPTIONS EXPLAINED2. MACMILLAN.

Cita Chicago Style (17a ed.)

TOMPKINS ROBERT. OPTIONS EXPLAINED2. ENGLAND: MACMILLAN, 1994.

Cita MLA (9a ed.)

TOMPKINS ROBERT. OPTIONS EXPLAINED2. MACMILLAN, 1994.