Cita APA (7a ed.)
Holden Thorp, P. A Guide to Stamp Collecting: America's favorite family hobby.
Cita Chicago Style (17a ed.)
Holden Thorp, Prescott. A Guide to Stamp Collecting: America's Favorite Family Hobby.
Cita MLA (9a ed.)
Holden Thorp, Prescott. A Guide to Stamp Collecting: America's Favorite Family Hobby.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.