APA-viite (7. p.)

Lookwood, A. &. R. (2010). Hospitality and tourism operating systems. Cengage Publishing.

Chicago-viite (17. p.)

Lookwood, Andrew & Rouski. Hospitality and Tourism Operating Systems. Canada: Cengage Publishing, 2010.

MLA-viite (9. p.)

Lookwood, Andrew & Rouski. Hospitality and Tourism Operating Systems. Cengage Publishing, 2010.