APA

Oberg J. E., Oberg A. R., . (1986). Pioneering space: living on the next frontier. New York: McGraw-Hill.

Chicago

Oberg James E, Oberg Alcestis R, . 1986. Pioneering space: living on the next frontier. New York: McGraw-Hill.

Harvard

Oberg J. E., Oberg A. R., . (1986). Pioneering space: living on the next frontier. New York: McGraw-Hill.

MLA

Oberg James E, Oberg Alcestis R, . Pioneering space: living on the next frontier. New York: McGraw-Hill. 1986.