APA (7th ed.) Citation

Heinlein, R. A. (2008). The door into summer. Virginia Edition, Inc..

Chicago Style (17th ed.) Citation

Heinlein, Robert A. The Door into Summer. Houston, TX: Virginia Edition, Inc., 2008.

MLA (9th ed.) Citation

Heinlein, Robert A. The Door into Summer. Virginia Edition, Inc., 2008.