Gaya APA

Amrein, W, O. et al (2005). Sturm-Liouville Theory (1st ed. 2005.). Basel: Birkhauser.

Gaya MLA

Amrein, Werner, O.. et al. "Sturm-Liouville Theory". 1st ed. 2005. Basel: Birkhauser, 2005. E Book.