APA (7th ed.) Citation

Shipman, H. L. (1989). Humans in space: 21st century frontiers. Plenum Press.

Chicago Style (17th ed.) Citation

Shipman, Harry L. Humans in Space: 21st Century Frontiers. New York: Plenum Press, 1989.

MLA (9th ed.) Citation

Shipman, Harry L. Humans in Space: 21st Century Frontiers. Plenum Press, 1989.

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