APA Style

Roca, N., Curto, R, M. (2002). Boys and girls of the world : from one end to the other . New York, USA: Barron\'s Educational Series, Inc.

MLA Style

Roca, Nuria., Curto, Rosa, Maria. "Boys and girls of the world : from one end to the other". New York, USA: Barron\'s Educational Series, Inc, 2002. Text.