Cita APA (7th ed.)

ALEXANDER, L. (1979). Developing skills (recorded Drills: Tapescript). Kanisius.

Cita Chicago (17th ed.)

ALEXANDER, L.G. Developing Skills (recorded Drills: Tapescript). Yogyakarta: Kanisius, 1979.

Cita MLA (9th ed.)

ALEXANDER, L.G. Developing Skills (recorded Drills: Tapescript). Kanisius, 1979.