APA (7th ed.) Citation

Johnson, V. E. (2012). The Theory and Practice of Model Aeroplaning. Project Gutenberg.

Chicago Style (17th ed.) Citation

Johnson, V. E. The Theory and Practice of Model Aeroplaning. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Johnson, V. E. The Theory and Practice of Model Aeroplaning. Project Gutenberg, 2012.

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