Παραπομπή σε μορφή APA (7η εκδ.)

Bos, N. (2018). Singing 101: Vocal basics and fundamental singing skills for all styles and abilities (Revised edition.). StudioBos.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Bos, Nancy. Singing 101: Vocal Basics and Fundamental Singing Skills for All Styles and Abilities. Revised edition. [Place of publication not identified]: StudioBos, 2018.

Παραπομπή σε μορφή MLA (9th εκδ.)

Bos, Nancy. Singing 101: Vocal Basics and Fundamental Singing Skills for All Styles and Abilities. Revised edition. StudioBos, 2018.