APA aipamena

Barbeau, E. J. (2003). Pell' s equation. Springer- verlag.

Chicago Style aipamena

Barbeau, Edward J. Pell' S Equation. New Yorl: Springer- verlag, 2003.

MLA aipamena

Barbeau, Edward J. Pell' S Equation. Springer- verlag, 2003.