Xavier, d. L., & Per, J. (2014). Testing for the Unconfoundedness Assumption Using an Instrumental Assumption. De Gruyter.
Čikaški stil citiranja (17. izdanje)Xavier, de Luna, i Johansson Per. Testing for the Unconfoundedness Assumption Using an Instrumental Assumption. De Gruyter, 2014.
MLA način citiranja (9. izdanje)Xavier, de Luna, i Johansson Per. Testing for the Unconfoundedness Assumption Using an Instrumental Assumption. De Gruyter, 2014.
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