APA (7th ed.) Zitazioa

Baues, H. J. (1977). Obstruction theory on homotopy classification maps. Springer-Verlag.

Chicago Style (17th ed.) Zitazioa

Baues, Hans J. Obstruction Theory on Homotopy Classification Maps. Berlín: Springer-Verlag, 1977.

MLA (9th ed.) Zitazioa

Baues, Hans J. Obstruction Theory on Homotopy Classification Maps. Springer-Verlag, 1977.