Campbell, D. L. (2016). The double life: A survivor's guide to transcend success and tragedy / by David Lee Campbell. 48HrBooks.
Citace podle Chicago (17th ed.)Campbell, David Lee. The Double Life: A Survivor's Guide to Transcend Success and Tragedy / by David Lee Campbell. Twinsburg, Ohio: 48HrBooks, 2016.
Citace podle MLA (8th ed.)Campbell, David Lee. The Double Life: A Survivor's Guide to Transcend Success and Tragedy / by David Lee Campbell. 48HrBooks, 2016.
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