Cita APA (7a ed.)

Giunta, L. (1955). Saint Peter's Vatican City: Artistic-religious guide (3rd ed.). [s.n.].

Cita Chicago Style (17a ed.)

Giunta, L. Saint Peter's Vatican City: Artistic-religious Guide. 3rd ed. [S.l.]: [s.n.], 1955.

Cita MLA (9a ed.)

Giunta, L. Saint Peter's Vatican City: Artistic-religious Guide. 3rd ed. [s.n.], 1955.