APA

Harris M., Westermann G., . (2015). A student's guide to developmental psychology. New york: Psychology press.

Chicago

Harris Margaret, Westermann Gert, . 2015. A student's guide to developmental psychology. New york: Psychology press.

Harvard

Harris M., Westermann G., . (2015). A student's guide to developmental psychology. New york: Psychology press.

MLA

Harris Margaret, Westermann Gert, . A student's guide to developmental psychology. New york: Psychology press. 2015.