APA (7e ed.) Bronvermelding

Furche, T., Gottlob, G., Grasso, G., Guo, X., Orsi, G., Schallhart, C., & Mille, A. (2012). OPAL: Automated form understanding for the deep web. ACM.

Chicago (17e ed.) Bronvermelding

Furche, T., G. Gottlob, G. Grasso, X. Guo, G. Orsi, C. Schallhart, en A. Mille. OPAL: Automated Form Understanding for the Deep Web. ACM, 2012.

MLA (9e ed.) Bronvermelding

Furche, T., et al. OPAL: Automated Form Understanding for the Deep Web. ACM, 2012.