Cita APA (7a ed.)

MCDOWELL, B. (1991). INSIDE THE VATICAN. NATIONAL GEOGRAPHIC.

Cita Chicago Style (17a ed.)

MCDOWELL, BART. INSIDE THE VATICAN. WASHINGTON: NATIONAL GEOGRAPHIC, 1991.

Cita MLA (9a ed.)

MCDOWELL, BART. INSIDE THE VATICAN. NATIONAL GEOGRAPHIC, 1991.