Gaya APA

Juul, S., Frydenberg, M. (2014). An introduction to stata for health researchers. Fourth Edition (Ed.ke-4). Texas: Stata Press.

Gaya MLA

Juul, Svend., Frydenberg, Morten. "An introduction to stata for health researchers. Fourth Edition". Ed.ke-4 Texas: Stata Press, 2014. Textbook.