APA (7e ed.) Bronvermelding

Norden, R. (1985). Symbols and their meaning. Concordia.

Chicago (17e ed.) Bronvermelding

Norden, Rudolf. Symbols and Their Meaning. Louis: Concordia, 1985.

MLA (9e ed.) Bronvermelding

Norden, Rudolf. Symbols and Their Meaning. Concordia, 1985.