Jacob, J. R., Platt, J. J., & Springer, G. (1978). Court jewelers of the world: Jeffrey R. Jacob ; with a foreword by Gene Springer ; Jerome J. Platt, editorial director (1 Aufl.). Postgraduate International.
Chicago Style (17. basım) AtıfJacob, Jeffrey R., Jerome J. Platt, ve Gene Springer. Court Jewelers of the World: Jeffrey R. Jacob ; with a Foreword by Gene Springer ; Jerome J. Platt, Editorial Director. 1 Aufl. Cherry Hill, N.J.: Postgraduate International, 1978.
MLA (8th ed.) AtıfJacob, Jeffrey R., et al. Court Jewelers of the World: Jeffrey R. Jacob ; with a Foreword by Gene Springer ; Jerome J. Platt, Editorial Director. 1 Aufl. Postgraduate International, 1978.
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