Wastall, P. (1989). Scales and Arpeggios for Trombone and Euphonium: Ed. by Peter Wastall. Boosey & Hawkes.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWastall, Peter. Scales and Arpeggios for Trombone and Euphonium: Ed. by Peter Wastall. [London]: Boosey & Hawkes, 1989.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWastall, Peter. Scales and Arpeggios for Trombone and Euphonium: Ed. by Peter Wastall. Boosey & Hawkes, 1989.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.