Collier, G. (1990). Blue Bird Pumpkin: Saxophone Quartet: Es Alto Saxophone 1 ( opt. B Soprano Saxophone), Es Alto Saxophone 2, B Tenor Saxophone, Es Bariton Saxophon. advance music.

Collier, Graham. Blue Bird Pumpkin: Saxophone Quartet: Es Alto Saxophone 1 ( Opt. B Soprano Saxophone), Es Alto Saxophone 2, B Tenor Saxophone, Es Bariton Saxophon. Rottenburg a/N: advance music, 1990.

Collier, Graham. Blue Bird Pumpkin: Saxophone Quartet: Es Alto Saxophone 1 ( Opt. B Soprano Saxophone), Es Alto Saxophone 2, B Tenor Saxophone, Es Bariton Saxophon. advance music, 1990.