Lua APA (7ú heag.)
Lidman, D., & Landshoff, H. Treasury of Stamps: 1,200 rare and beautiful stamps in color.
Lua i Stíl Chicago (17ú heag.)
Lidman, David, agus H. Landshoff. Treasury of Stamps: 1,200 Rare and Beautiful Stamps in Color.
Lua MLA (9ú heag.)
Lidman, David, agus H. Landshoff. Treasury of Stamps: 1,200 Rare and Beautiful Stamps in Color.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.