APA (7th ed.) Citation

Pierce, F. E., Durham, W. H., & MacCracken, H. N. (2010). An Introduction to Shakespeare. Project Gutenberg.

Chicago Style (17th ed.) Citation

Pierce, F. E., W. H. Durham, and H. N. MacCracken. An Introduction to Shakespeare. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Pierce, F. E., et al. An Introduction to Shakespeare. Project Gutenberg, 2010.

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