Gaya APA

Keyboards. (1993). tempaterbit: penerbit.

Gaya Chicago

Keyboards. Edisi. tempaterbit: penerbit, 1993. Text.

Gaya MLA

Keyboards. Edisi. tempaterbit: penerbit, 1993. Text.

Gaya Turabian

Keyboards. tempaterbit: penerbit, 1993. Print.