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Liang, Wen-Miin, Jian-Jung Chen, Chih-Hung Chang, Hung-Wei Chen, Shiah-Lian Chen, Liang-Wen Hang, e Jung-Der Wang. An Empirical Comparison of the WHOQOL-BREF and the SGRQ Among Patients With COPD. Springer Netherlands, 2008.

Liang, Wen-Miin, et al. An Empirical Comparison of the WHOQOL-BREF and the SGRQ Among Patients With COPD. Springer Netherlands, 2008.