Petrunin, A. (2013). Euclidean plane and its relatives; a minimalist introduction.
Citazione stile Chigago Style (17a edizione)Petrunin, Anton. Euclidean Plane and Its Relatives; a Minimalist Introduction. 2013.
Citatione MLA (9a ed.)Petrunin, Anton. Euclidean Plane and Its Relatives; a Minimalist Introduction. 2013.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.