APA (7th ed.) Citation

Sanders, G. R., Sanders, H., & Roberts, R. (1990). Collector's guide to autographs. Wallace-Homestead Book Co..

Chicago Style (17th ed.) Citation

Sanders, George R., Helen Sanders, and Ralph Roberts. Collector's Guide to Autographs. Radnor, Pa.: Wallace-Homestead Book Co., 1990.

MLA (9th ed.) Citation

Sanders, George R., et al. Collector's Guide to Autographs. Wallace-Homestead Book Co., 1990.