APA aipamena

Leijenhorst, D. C. v. (1977). On designs and their automorphisms. Z.uitg..

Chicago Style aipamena

Leijenhorst, Dirk Cornelis van. On Designs and Their Automorphisms. [S.l.]: Z.uitg., 1977.

MLA aipamena

Leijenhorst, Dirk Cornelis van. On Designs and Their Automorphisms. Z.uitg., 1977.