APA način citiranja

Γκούμας, Γ. (2018). Teaching EasyLogo: Create drawing & animations : a step-by-step guide to teach EasyLogo programming to kids (2nd ed.). [Athens]: [s.n.].

Čikaški stil citiranja

Γκούμας, Γεώργιος. Teaching EasyLogo: Create Drawing & Animations : A Step-by-step Guide to Teach EasyLogo Programming to Kids. 2nd ed. [Athens]: [s.n.], 2018.

MLA način citiranja

Γκούμας, Γεώργιος. Teaching EasyLogo: Create Drawing & Animations : A Step-by-step Guide to Teach EasyLogo Programming to Kids. 2nd ed. [Athens]: [s.n.], 2018.