APA (7th ed.) Citation

Keats, J. Bright star! would I were stedfast as thou art!. [anthology].

Chicago Style (17th ed.) Citation

Keats, John. Bright Star! Would I Were Stedfast as Thou Art!. [anthology].

MLA (9th ed.) Citation

Keats, John. Bright Star! Would I Were Stedfast as Thou Art!. [anthology].

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