Cita APA (7th ed.)

HAMMOND ALLEN. (1998). WHICH WORLD? SCENARIOS FOR THE 21ST CENTURY. EARTHSCAN.

Cita Chicago (17th ed.)

HAMMOND ALLEN. WHICH WORLD? SCENARIOS FOR THE 21ST CENTURY. LONDON: EARTHSCAN, 1998.

Cita MLA (9th ed.)

HAMMOND ALLEN. WHICH WORLD? SCENARIOS FOR THE 21ST CENTURY. EARTHSCAN, 1998.