APA-referens (7:e uppl.)

Ashton, B. G. (1967). Genes, chromosomes and evolution. Longmans.

Chicago-referens (17:e uppl.)

Ashton, Beryl Grace. Genes, Chromosomes and Evolution. London,: Longmans, 1967.

MLA-referens (8:e uppl.)

Ashton, Beryl Grace. Genes, Chromosomes and Evolution. Longmans, 1967.