APA (7th ed.) Citation

Rigby, E. (2012). A System of Midwifery. Project Gutenberg.

Chicago Style (17th ed.) Citation

Rigby, Edward. A System of Midwifery. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Rigby, Edward. A System of Midwifery. Project Gutenberg, 2012.

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