Cita APA (7a ed.)

Duranton, G., & Puga, D. (1999). Diversity and specialisation in cities: Why, where and when does it matter? Centre for Economic Performance.

Cita Chicago Style (17a ed.)

Duranton, Gilles, y Diego Puga. Diversity and Specialisation in Cities: Why, Where and When Does It Matter? London: Centre for Economic Performance, 1999.

Cita MLA (9a ed.)

Duranton, Gilles, y Diego Puga. Diversity and Specialisation in Cities: Why, Where and When Does It Matter? Centre for Economic Performance, 1999.