APA

Hoyer W. J., Roodin P. A., . (2009). Adult development and aging. Boston: McGraw Hill.

Chicago

Hoyer William J, Roodin Paul A, . 2009. Adult development and aging. Boston: McGraw Hill.

Harvard

Hoyer W. J., Roodin P. A., . (2009). Adult development and aging. Boston: McGraw Hill.

MLA

Hoyer William J, Roodin Paul A, . Adult development and aging. Boston: McGraw Hill. 2009.