|aDePoy, Elizabeth. |aIntroduction to research :|bunderstanding and applying multiple strategies /|cElizabeth DePoy, Laura N. Gitlin. - |a4th ed. - |aSt. Louis, Mo. :|bElsevier/Mosby,|cc2011. - |axiv, 369 p. :|bill., map ;|c24 cm. ISBN: |a9780323068543 (pbk.) Subjects--Topical Terms: |aPublic health|xResearch|xMethodology. |aMedical care|xResearch|xMethodology. |aHuman services|xResearch|xMethodology.