APA (7 ম সংস্করণ) উদ্ধৃতি

Schubert, F. P., & Gieseking, W. Impromptus, op. 90, nos 1-4 (D.899) ; Impromptus, op.142, nos.1-2, D.935. Angel Records ANG 35533.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Schubert, Franz Peter, এবং Walter Gieseking. Impromptus, Op. 90, Nos 1-4 (D.899) ; Impromptus, Op.142, Nos.1-2, D.935. s.l: Angel Records ANG 35533.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Schubert, Franz Peter, এবং Walter Gieseking. Impromptus, Op. 90, Nos 1-4 (D.899) ; Impromptus, Op.142, Nos.1-2, D.935. Angel Records ANG 35533.