Cita APA (7th ed.)

Hudelson, S. (1985). Hopscotch: Course book. Level two. Regents Publishing Company.

Cita Chicago (17th ed.)

Hudelson, Sarah. Hopscotch: Course Book. Level Two. Nueva York: Regents Publishing Company, 1985.

Cita MLA (9th ed.)

Hudelson, Sarah. Hopscotch: Course Book. Level Two. Regents Publishing Company, 1985.