Gaya APA

Varnum, B, M. (1980). Play & sing-it's Christmas!: a piano book of easy-to-play carols . New York: COLLIER MACMILLAN PUBLISHERS.

Gaya MLA

Varnum, Brooke, Minarik. "Play & sing-it's Christmas!: a piano book of easy-to-play carols". New York: COLLIER MACMILLAN PUBLISHERS, 1980. Text.