Παραπομπή σε μορφή APA (7η εκδ.)

Gershwin, G., & Meij, J. d. (1991). Two Songs from "Porgy & Bess": For solo voice, choir and band / George & Ira Gershwin. Arr. Johan de Meij (Full score.). Molenaar.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gershwin, George, και Johan de Meij. Two Songs from "Porgy & Bess": For Solo Voice, Choir and Band / George & Ira Gershwin. Arr. Johan De Meij. Full score. Wormerveer, Holland: Molenaar, 1991.

Παραπομπή σε μορφή MLA (8th εκδ.)

Gershwin, George, και Johan de Meij. Two Songs from "Porgy & Bess": For Solo Voice, Choir and Band / George & Ira Gershwin. Arr. Johan De Meij. Full score. Molenaar, 1991.