Longer quotes are cited differently from short quotations. Here's an example:
Although traditionally it has been thought that allergy-prone people should avoid exposure to pets, more recent work has produced contradictory results:The research suggests that exposure to a pet during a child's first year of life actually builds the child's tolerance to pets and to other allergens. It can protect against sensitization to allergens and protect against the development of allergic asthma during later childhood and adulthood.Berg (2003, p.13)
Longer quotes should:
Note that the author details are right-justified, and only the year and page number are in parentheses.