APA (7th ed.) Citation

Zafra, C. d. (2010). The Development of Armor-piercing Shells with Suggestions for their Improvement. Project Gutenberg.

Chicago Style (17th ed.) Citation

Zafra, Carlos de. The Development of Armor-piercing Shells with Suggestions for Their Improvement. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Zafra, Carlos de. The Development of Armor-piercing Shells with Suggestions for Their Improvement. Project Gutenberg, 2010.

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