@book{martorella_2001, title={Teaching social studies in middle and secondary schools (3rd ed.)}, ISBN={0130203602}, publisher={Upper Saddle River, NJ: Merrill Prentice Hall}, author={Martorella, P. H.}, year={2001} }
 @book{martorella_1997, title={Interactive technologies and the social studies: Emerging issues and applications}, ISBN={0791431398}, publisher={Albany, NY: State University of New York Press}, author={Martorella, P. H.}, year={1997} }
 @article{martorella_1997, title={Technology and the social studies - or: Which way to the sleeping giant?}, volume={25}, ISSN={["0093-3104"]}, DOI={10.1080/00933104.1997.10505828}, abstractNote={(1997). Technology and the Social Studies—or: Which Way to the Sleeping Giant? Theory & Research in Social Education: Vol. 25, No. 4, pp. 511-514.}, number={4}, journal={THEORY AND RESEARCH IN SOCIAL EDUCATION}, author={Martorella, PH}, year={1997}, pages={511–514} }
 @book{martorella_1996, title={Teaching social studies in middle and secondary schools (2nd ed.)}, ISBN={134420705}, publisher={Englewood Cliffs, NJ: Merrill}, author={Martorella, P. H.}, year={1996} }
 @book{martorella_1991, title={Teaching social studies in middle and secondary schools}, ISBN={002376791X}, publisher={New York, NY: Macmillan; Toronto: Collier Macmillan Canada}, author={Martorella, P. H.}, year={1991} }