APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (8e ed.) Bronvermelding

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