APA-čujuhus (7. p.)

(1988). Advanced logo: A language for learning / Michael Friendly.

Chicago-čujuhus (17. p.)

Advanced Logo: A Language for Learning / Michael Friendly. 1988.

MLA-čujuhus (9. p.)

Advanced Logo: A Language for Learning / Michael Friendly. 1988.

Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.