APA (7 ম সংস্করণ) উদ্ধৃতি

Langey, O. Practical Tutor for the Clarinet: Whith fingering charts for boehm and simple systems. Boosey & Hawkes Music Publishers Limited.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Langey, Otto. Practical Tutor for the Clarinet: Whith Fingering Charts for Boehm and Simple Systems. Londres, Inglaterra: Boosey & Hawkes Music Publishers Limited.

M.L.A (9 ম সংস্করণ) উদ্ধৃতি

Langey, Otto. Practical Tutor for the Clarinet: Whith Fingering Charts for Boehm and Simple Systems. Boosey & Hawkes Music Publishers Limited.