Omar, A.S.; Wright, V. (1982). "Double-Blind Controlled Trial of Diclofenac Sodium and Placebo in Treatment of Nonspecific Low Back Pain". Progress in Rheumatology: Second International Seminar on Treatment of Rheumatic Diseases (2nd ed.). John Wright. p. 103. ISBN 0723670072.

The following includes bibliography entries followed by source references.

References

1. Liesenhoff, C.; Hoffmann, K.; Elsammen, A. (1985). "Expert in the Field of Rheumatology: Dr. Ahmed Said Omar, Wiesbaden". Egyptians in the Federal Republic of Germany (in German). Gräfelfing. p. 110. ISBN 978-3-89164-009-8.