Παραπομπή σε μορφή APA (7η εκδ.)

Kay, R., & Smith, J. (1989). The Molecular basis of positional signalling: Papers presented at a meeting of the British Society for Developmental Biology at the University of St. Andrews, April 1989. The Company of Biologists.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Kay, Rob, και Jim Smith. The Molecular Basis of Positional Signalling: Papers Presented at a Meeting of the British Society for Developmental Biology at the University of St. Andrews, April 1989. Cambridge: The Company of Biologists, 1989.

Παραπομπή σε μορφή MLA (8th εκδ.)

Kay, Rob, και Jim Smith. The Molecular Basis of Positional Signalling: Papers Presented at a Meeting of the British Society for Developmental Biology at the University of St. Andrews, April 1989. The Company of Biologists, 1989.