APA (7th ed.) Citation

Liddle, W., Liddle, M., Larsson, C., & Zorn, A. (2013). Peeps at many lands: Sweden. Project Gutenberg.

Chicago Style (17th ed.) Citation

Liddle, William, Mrs Liddle, Carl Larsson, and Anders Zorn. Peeps at Many Lands: Sweden. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Liddle, William, et al. Peeps at Many Lands: Sweden. Project Gutenberg, 2013.

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