Bolton, Karl (2022) The impact of COVID-19 on group tour operators and the implications for overtourism. In: Global Strategic Management in the Service Industry: A Perspective of the New Era. Emerald Publishing Limited, UK, pp. 139-152. ISBN 978-1-80117-082-6

Bolton, Karl (2022) Global Strategic Management in the service Industry. In: Global Strategic Management in the service Industry. na, 1 (na). emerald publishing, uk, pp. 139-152. ISBN na

Bolton, Karl (2021) The impact of Covid 19 on UK group tour operations. In: CHME 2021, 13-14 May 2021, Sheffield. (Unpublished)

Bolton, Karl (2020) How ‘over-tourism’ has impacted the host destinations environment, culture and economy and developing a model, with global applications, to manage these challenges. In: CHME 2021, 13-14 May 2021, Sheffield. (Unpublished)