Παραπομπή σε μορφή APA (7η εκδ.)
Sherwood, W., Seckler, B., & Stewart, F. Paintings on Stamps: An Encyclopedic Handbook Arranged by Artist and Covering all Paintings, Drawings, Watercolors, Lithographs, Sketches, Engravings, Etchings, and Similar Works on Postage Stamps.
Παραπομπή σε μορφή Chicago (17η εκδ.)
Sherwood, William, Bernard Seckler, και Francine Stewart. Paintings on Stamps: An Encyclopedic Handbook Arranged by Artist and Covering All Paintings, Drawings, Watercolors, Lithographs, Sketches, Engravings, Etchings, and Similar Works on Postage Stamps.
Παραπομπή σε μορφή MLA (9th εκδ.)
Sherwood, William, et al. Paintings on Stamps: An Encyclopedic Handbook Arranged by Artist and Covering All Paintings, Drawings, Watercolors, Lithographs, Sketches, Engravings, Etchings, and Similar Works on Postage Stamps.
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