Negus, J. (1991). Philatelic literature: Compilation techniques and reference sources. James Bendon.
Citación estilo ChicagoNegus, James. Philatelic Literature: Compilation Techniques and Reference Sources. México: James Bendon, 1991.
Cita MLANegus, James. Philatelic Literature: Compilation Techniques and Reference Sources. James Bendon, 1991.
Warning: These citations may not always be 100% accurate.