APA (7th ed.) Citation

Sibelius, J., Delius, F., Sibelius, J., & Delius, F. (1980). String quartets. L'Oiseau-Lyre.

Chicago Style (17th ed.) Citation

Sibelius, Jean, Frederick Delius, Jean Sibelius, and Frederick Delius. String Quartets. [S.l.]: L'Oiseau-Lyre, 1980.

MLA (9th ed.) Citation

Sibelius, Jean, et al. String Quartets. L'Oiseau-Lyre, 1980.