एपीए उद्धरण

F Hefts. (1991). Growth factors and alzheimer's disease. Berlin: Spring-Verlag.

शिकागो स्टाइल उद्धरण

F Hefts. Growth Factors and Alzheimer's Disease. Berlin: Spring-Verlag, 1991.

एमएलए उद्धरण

F Hefts. Growth Factors and Alzheimer's Disease. Berlin: Spring-Verlag, 1991.