Παραπομπή APA

Bechtell, H. (1971). The theory of groups. Addison-Wesley Pub. Co.

Παραπομπή Chicago Style

Bechtell, Homer. The Theory of Groups. Reading, Mass.: Addison-Wesley Pub. Co, 1971.

Παραπομπή MLA

Bechtell, Homer. The Theory of Groups. Addison-Wesley Pub. Co, 1971.