Παραπομπή APA

Birks, M. &. M. (2015). Grounded Theory: A Practical Guide (2.).

Παραπομπή Chicago Style

Birks, Melanie & Mills. Grounded Theory: A Practical Guide. 2. .Sage Publications, 2015.

Παραπομπή MLA

Birks, Melanie & Mills. Grounded Theory: A Practical Guide. 2. 2015.