Quotations are used to support your positions and ideas, not as a replacement for them. When your own words only function as connectors or links between the quotations of other authors, you likely have a very poor paper.
Some quotation guidelines:
The conventions of integrating and citing quotes are often style specific. The following links provide guidance:
Purdue OWL: APA Formatting and Style Guide - In-Text Citations
MLA Formatting and Style Guide - In-Text Citations
Scientists using CSE documentation style prefer paraphrasing their sources rather than using direct quotes. For guidance go to the University of Wisconsin at Madison's Writer's Handbook.