APA (7th ed.) Citation

(2016). Next Step to Mars: Deep Space Habitats. ProQuest.

Chicago Style (17th ed.) Citation

Next Step to Mars: Deep Space Habitats. Bethesda, Md.: ProQuest, 2016.

MLA (9th ed.) Citation

Next Step to Mars: Deep Space Habitats. ProQuest, 2016.

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