Gaya APA

Happy Bobby. (s.a). s.l: s.n.

Gaya Chicago

Happy Bobby. . s.l: s.n, s.a. CD-ROM.

Gaya MLA

Happy Bobby. . s.l: s.n, s.a. CD-ROM.

Gaya Turabian

Happy Bobby. s.l: s.n, s.a. CD-ROM.