Cita APA (7th ed.)

Gill, B. (1968). Bob Gill's portfolio. Lund Humphries.

Cita Chicago (17th ed.)

Gill, Bob. Bob Gill's Portfolio. Londres: Lund Humphries, 1968.

Cita MLA (9th ed.)

Gill, Bob. Bob Gill's Portfolio. Lund Humphries, 1968.