Παραπομπή APA

Spurgeon, D. (2006). Higher but “safe” level of lead in blood increases risk of death. BMJ Publishing Group Ltd.

Παραπομπή Chicago Style

Spurgeon, David. Higher but “safe” Level of Lead in Blood Increases Risk of Death. BMJ Publishing Group Ltd, 2006.

Παραπομπή MLA

Spurgeon, David. Higher but “safe” Level of Lead in Blood Increases Risk of Death. BMJ Publishing Group Ltd, 2006.

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