Cita APA (7a ed.)
Pope, N., Growald Brooks, N., & Hundertmark, K. Illustrated Guide to the National Postal Museum.
Cita Chicago Style (17a ed.)
Pope, Nancy, Nancy Growald Brooks, y Kristin Hundertmark. Illustrated Guide to the National Postal Museum.
Cita MLA (9a ed.)
Pope, Nancy, et al. Illustrated Guide to the National Postal Museum.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.