Παραπομπή APA

Freeman, W. H., & Bracegirdle, B. (1971). Atlas of invertebrate structure. Heinemann education books.

Παραπομπή Chicago Style

Freeman, W. H., και Brian Bracegirdle. Atlas of Invertebrate Structure. London: Heinemann education books, 1971.

Παραπομπή MLA

Freeman, W. H., και Brian Bracegirdle. Atlas of Invertebrate Structure. Heinemann education books, 1971.