APA

Ruppe H. O., . (1967). Introduction to astronautics. New York: Academic Press.

Chicago

Ruppe Harry O, . 1967. Introduction to astronautics. New York: Academic Press.

Harvard

Ruppe H. O., . (1967). Introduction to astronautics. New York: Academic Press.

MLA

Ruppe Harry O, . Introduction to astronautics. New York: Academic Press. 1967.