Cita APA (7th ed.)

BIRCHALL DAVID. (2002). FUTURE PROOFING. CAPSTONE.

Cita Chicago (17th ed.)

BIRCHALL DAVID. FUTURE PROOFING. U K: CAPSTONE, 2002.

Cita MLA (9th ed.)

BIRCHALL DAVID. FUTURE PROOFING. CAPSTONE, 2002.