APA (7th ed.) Citation

Hubbard, L. R. (2017). Battlefield Earth: A saga of the year 3000 (21st century edition.). Galaxy Press.

Chicago Style (17th ed.) Citation

Hubbard, L. Ron. Battlefield Earth: A Saga of the Year 3000. 21st century edition. Hollywood, CA: Galaxy Press, 2017.

MLA (8th ed.) Citation

Hubbard, L. Ron. Battlefield Earth: A Saga of the Year 3000. 21st century edition. Galaxy Press, 2017.

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