APA

SHEERIN S., . (1990). SELF-ACCESS. [s.l.]: OXFORS UNIVERSITY PRESS.

Chicago

SHEERIN SUSAN, . 1990. SELF-ACCESS. [s.l.]: OXFORS UNIVERSITY PRESS.

Harvard

SHEERIN S., . (1990). SELF-ACCESS. [s.l.]: OXFORS UNIVERSITY PRESS.

MLA

SHEERIN SUSAN, . SELF-ACCESS. [s.l.]: OXFORS UNIVERSITY PRESS. 1990.