APA

Silva V, . (1985). The role of Attitudes and Motivation in L2 Learning. Trujillo-PE: Direccion Universitaria de Servicios Académicos.

Chicago

Silva V, . 1985. The role of Attitudes and Motivation in L2 Learning. Trujillo-PE: Direccion Universitaria de Servicios Académicos.

Harvard

Silva V, . (1985). The role of Attitudes and Motivation in L2 Learning. Trujillo-PE: Direccion Universitaria de Servicios Académicos.

MLA

Silva V, . The role of Attitudes and Motivation in L2 Learning. Trujillo-PE: Direccion Universitaria de Servicios Académicos. 1985.