Gaya APA

Schaeffer, J, P. et al (1998). Playing the Piano and Electronic Keyboards . New York: Alpa Books;a Division of Macmillan General Reference.

Gaya MLA

Schaeffer, Jody, P.. et al. "Playing the Piano and Electronic Keyboards". New York: Alpa Books;a Division of Macmillan General Reference, 1998. Text.