APA (7th ed.) Citation

(1911). Peter Piper's practical principles of plain & perfect pronunciation. Le Roy Phillips.

Chicago Style (17th ed.) Citation

Peter Piper's Practical Principles of Plain & Perfect Pronunciation. Boston: Le Roy Phillips, 1911.

MLA (9th ed.) Citation

Peter Piper's Practical Principles of Plain & Perfect Pronunciation. Le Roy Phillips, 1911.

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