Παραπομπή σε μορφή APA (7η εκδ.)

Ladkin, A., & Spiller, J. (2000). The meetings, incentives, conferences & exhibitions industry. Travel & Tourism Intelligence.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Ladkin, Adele, και Julie Spiller. The Meetings, Incentives, Conferences & Exhibitions Industry. London: Travel & Tourism Intelligence, 2000.

Παραπομπή σε μορφή MLA (9th εκδ.)

Ladkin, Adele, και Julie Spiller. The Meetings, Incentives, Conferences & Exhibitions Industry. Travel & Tourism Intelligence, 2000.