Cita APA (7th ed.)

Welsby, P. D. (1996). Structured BASIC programming: Churchill Livingstone. Churchill Livingstone.

Cita Chicago (17th ed.)

Welsby, Philip D. Structured BASIC Programming: Churchill Livingstone. Edinburgh: Churchill Livingstone, 1996.

Cita MLA (9th ed.)

Welsby, Philip D. Structured BASIC Programming: Churchill Livingstone. Churchill Livingstone, 1996.