Cita APA (7th ed.)

Freiwald, J., & Biorklund, M. (2010). Lab language activity books: Based on the story number the stars. Ediciones Lilium.

Cita Chicago (17th ed.)

Freiwald, Jacqueline, i Magdalena Biorklund. Lab Language Activity Books: Based on the Story Number the Stars. Buenos Aires: Ediciones Lilium, 2010.

Cita MLA (9th ed.)

Freiwald, Jacqueline, i Magdalena Biorklund. Lab Language Activity Books: Based on the Story Number the Stars. Ediciones Lilium, 2010.