APA (7th ed.) Citation

Zabel, P. (2018). Bio-regenerative Life Support Systems for human space exploration.

Chicago Style (17th ed.) Citation

Zabel, Paul. Bio-regenerative Life Support Systems for Human Space Exploration. 2018.

MLA (9th ed.) Citation

Zabel, Paul. Bio-regenerative Life Support Systems for Human Space Exploration. 2018.

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