1.

Inside the Vatican
by: Bart McDowell
December 31, 1991

2.

Rome: The Complete Guide with Walking Tours of Classical Rome and the Vatican (Fodor's Rome, 1999)
by: Fodor's
February 22, 1999

3.

Second Spring: A Love Story (Unabridged)
by: Andrew Greeley
December 31, 1991

4.

Rome & Vatican Travel Pack (Globetrotter Travel Packs)
by: Fiona Nichols
August 01, 2004

5.

Fodor's Holy Rome, 1st Edition: A Millennium Guide to Christian Sights (Fodor's Holy Rome)
by: Robert I.C. Fisher
October 26, 1999

6.

Rome and the Vatican Travel Pack (Globetrotter Travel Packs)
by: Fiona Nicholls
November 01, 2006

7.

The Heritage Guide Rome: The Eternal City and the Vatican, Their Churches, Museums, Monuments and Archeological Sites (Heritage Guides)
by: Touring Club Italiano, Touring Club of Italy
1999-02

8.

Venice, Florence, Naples, Rome, and the Vatican City (Civilization, Art, and History)
1988

9.

Rome and Vatican in Colour
from: Plurigraf
1993

10.

Vatican City
by: Francesco Roncalli
1986