APA citiranje

Robbins, H., & Zhang, C. H. (1988). Estimating a treatment effect under biased sampling.

Citação norma Chicago

Robbins, H., and C H. Zhang. Estimating a Treatment Effect Under Biased Sampling. 1988.

MLA citiranje

Robbins, H., and C H. Zhang. Estimating a Treatment Effect Under Biased Sampling. 1988.

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