Cita APA (7a ed.)

Cambra Aguirrebeitia, M. J. (1975). The roles of motivation and attitude in second language learning. [s.n.].

Cita Chicago Style (17a ed.)

Cambra Aguirrebeitia, María Jesús. The Roles of Motivation and Attitude in Second Language Learning. [S.l.]: [s.n.], 1975.

Cita MLA (9a ed.)

Cambra Aguirrebeitia, María Jesús. The Roles of Motivation and Attitude in Second Language Learning. [s.n.], 1975.