Cita APA (7th ed.)

Pernia, E. M. (1975). Estimating the components of urban growth. s.n.].

Cita Chicago (17th ed.)

Pernia, Ernesto M. Estimating the Components of Urban Growth. [S.l: s.n.], 1975.

Cita MLA (9th ed.)

Pernia, Ernesto M. Estimating the Components of Urban Growth. s.n.], 1975.