Cita APA (7th ed.)

Murphy, J., Murphy, J., & Boyer, H. (2006). Stay young forever. Busy Bee.

Cita Chicago (17th ed.)

Murphy, Joseph, Jean Murphy, i Herminia Boyer. Stay Young Forever. Pasay City: Busy Bee, 2006.

Cita MLA (9th ed.)

Murphy, Joseph, et al. Stay Young Forever. Busy Bee, 2006.