Cita APA (7th ed.)
Stanley Gibbons Publications, Ltd, Stanley Gibbons, & James, W. The Stanley Gibbons Book of Stamps and Stamp Collecting (Segunda edición.).
Cita Chicago (17th ed.)
Stanley Gibbons Publications, Ltd, Stanley Gibbons, i Watson James. The Stanley Gibbons Book of Stamps and Stamp Collecting. Segunda edición.
Cita MLA (9th ed.)
Stanley Gibbons Publications, Ltd, et al. The Stanley Gibbons Book of Stamps and Stamp Collecting. Segunda edición.
Atenció: Aquestes cites poden no estar 100% correctes.