APA citiranje

Heiden, D. (2001). A well-rewarded endeavor. Copyright 2001 BMJ Publishing Group.

Citação norma Chicago

Heiden, David. A Well-rewarded Endeavor. Copyright 2001 BMJ Publishing Group, 2001.

MLA citiranje

Heiden, David. A Well-rewarded Endeavor. Copyright 2001 BMJ Publishing Group, 2001.

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