APA (7e ed.) Bronvermelding

Howard, R. E. (1974). Skull-face, and others. Neville Spearman (Jersey) Ltd ; [Distributed by Spearman Ltd].

Chicago (17e ed.) Bronvermelding

Howard, Robert E. Skull-face, and Others. Jersey : [London]: Neville Spearman (Jersey) Ltd ; [Distributed by Spearman Ltd], 1974.

MLA (8e ed.) Bronvermelding

Howard, Robert E. Skull-face, and Others. Neville Spearman (Jersey) Ltd ; [Distributed by Spearman Ltd], 1974.