BURNS, Alvin C. and Ronald F. BUSH. Marketing Research. 7th ed. Boston: Pearson, 2014. 487 p. ISBN 978-0-273-76851-7.
MALHOTRA, Naresh K. Marketing Research. An Applied Approach. 7th ed. New Jersey: Prentice Hall, 2019. 888 s. ISBN 978-1292265636.
MALHOTRA, Naresh K. Essentials of Marketing Research: a Hands-on Orientation. Boston: Pearson, 2015. 432 p. ISBN 978-1-292-06016-3 .