Orthodox Spirituality. A Practical Guide for the Faithful and a Definitive Manual for the Scholar. By Dumitru Staniloae.

Softcover, 397 pages. 
Publisher: St. Tikhon's Press, 2nd Printing, 2003. 
Size: 5 1/2" x 8 1/2"  
ISBN: 978-0-9905029-3-7