APA (7th ed.) Citation

Zervas, P., & Sampson, D. (2016). Studying social tagging systems in learning object repositories: An empirical study of the tag vocabulary growth.

Chicago Style (17th ed.) Citation

Zervas, P., and Demetrios Sampson. Studying Social Tagging Systems in Learning Object Repositories: An Empirical Study of the Tag Vocabulary Growth. 2016.

MLA (9th ed.) Citation

Zervas, P., and Demetrios Sampson. Studying Social Tagging Systems in Learning Object Repositories: An Empirical Study of the Tag Vocabulary Growth. 2016.

Warning: These citations may not always be 100% accurate.