Cita APA (7a ed.)

Giunta, L. (1968). Saint Peter's Vatican City: Artistic, religious guide. [editor no identificado].

Cita Chicago Style (17a ed.)

Giunta, Luigi. Saint Peter's Vatican City: Artistic, Religious Guide. Roma: [editor no identificado], 1968.

Cita MLA (9a ed.)

Giunta, Luigi. Saint Peter's Vatican City: Artistic, Religious Guide. [editor no identificado], 1968.