Lancaster, E. L., & Renfrow, K. D. (2004). Alfred's group piano for adults: An innovative method enhanced with audio and MIDI files for practice and performance (2nd ed.). Alfred Pub.
Citace podle Chicago (17th ed.)Lancaster, E. L., a Kenon D. Renfrow. Alfred's Group Piano for Adults: An Innovative Method Enhanced with Audio and MIDI Files for Practice and Performance. 2nd ed. Van Nuys, Calif: Alfred Pub, 2004.
Citace podle MLA (9th ed.)Lancaster, E. L., a Kenon D. Renfrow. Alfred's Group Piano for Adults: An Innovative Method Enhanced with Audio and MIDI Files for Practice and Performance. 2nd ed. Alfred Pub, 2004.
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