Cita APA (7a ed.)

Riley, P. (1989). Learners' representations of language and language learning. [s.n.].

Cita Chicago Style (17a ed.)

Riley, Philip. Learners' Representations of Language and Language Learning. [S.l.]: [s.n.], 1989.

Cita MLA (9a ed.)

Riley, Philip. Learners' Representations of Language and Language Learning. [s.n.], 1989.