APA (7th ed.) Citation

ABT, F. Practical singing tutor for bass and baritone Op. 474. [s.n.].

Chicago Style (17th ed.) Citation

ABT, Franz. Practical Singing Tutor for Bass and Baritone Op. 474. [s.n.].

MLA (8th ed.) Citation

ABT, Franz. Practical Singing Tutor for Bass and Baritone Op. 474. [s.n.].

Warning: These citations may not always be 100% accurate.