Cita APA (7th ed.)

ebrary, Inc, & Marcus, R. (2013). Osteoporosis (4th ed.). Elsevier/AP.

Cita Chicago (17th ed.)

ebrary, Inc, i Robert Marcus. Osteoporosis. 4th ed. Amsterdam ; Boston: Elsevier/AP, 2013.

Cita MLA (9th ed.)

ebrary, Inc, i Robert Marcus. Osteoporosis. 4th ed. Elsevier/AP, 2013.