User talk:Azhuang2/sandbox
There are some words that I would remove to make things seem a little less biased. However, through the context of your topic, I am not sure if I am correct in evaluating if those words add bias to the topic. An example would be, "By taking the waste of the consumer, there is no worry and cost of handling it for both sides." This sentence seems persuasive with a bias for the take-back system.
The sources seem to be reliable as you've taken them from journals that are on the Proquest database. Proquest is a reliable database because public libraries pay for them and use them. Furthermore, the sources you have chosen have many references on their own, which increases their credibility.
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