APA (7th ed.) Citation

Stravinsky, I., & Gunnlaugsdóttir, F. Three pieces.

Chicago Style (17th ed.) Citation

Stravinsky, Igor, and Freyja Gunnlaugsdóttir. Three Pieces.

MLA (9th ed.) Citation

Stravinsky, Igor, and Freyja Gunnlaugsdóttir. Three Pieces.

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