APA (7th ed.) Citation

Nöstlinger, C., & Barrutieta, X. (1986). Susi maitea, Paul maitea. S.M.

Chicago Style (17th ed.) Citation

Nöstlinger, Christine, and Xabier Barrutieta. Susi Maitea, Paul Maitea. Bilbo [i.e. Madrid]: S.M, 1986.

MLA (9th ed.) Citation

Nöstlinger, Christine, and Xabier Barrutieta. Susi Maitea, Paul Maitea. S.M, 1986.