APA ציטוט

Leavitt, W. ,., & Skinner, R. M. ,. (1962). Speaking of space: The best from Space digest. Boston: little, Brown and Company.

Trích dẫn kiểu Chicago

Leavitt, William ,, và Richard M. Skinner. Speaking of Space: The Best From Space Digest. Boston: little, Brown and Company, 1962.

ציטוט MLA

Leavitt, William ,, và Richard M. Skinner. Speaking of Space: The Best From Space Digest. Boston: little, Brown and Company, 1962.