Citazione Stile APA (7a Edizione)

Bird, E. (2011). Planet App: Kids' Book Apps Are Everywhere. But Are They Any Good?

Citazione stile Chigago Style (17a edizione)

Bird, Elizabeth. Planet App: Kids' Book Apps Are Everywhere. But Are They Any Good? 2011.

Citatione MLA (9a ed.)

Bird, Elizabeth. Planet App: Kids' Book Apps Are Everywhere. But Are They Any Good? 2011.