APA

Hoffman Lois, . (1998). Development of Psychology Today. New York: McGraw-Hill.

Chicago

Hoffman Lois, . 1998. Development of Psychology Today. New York: McGraw-Hill.

Harvard

Hoffman Lois, . (1998). Development of Psychology Today. New York: McGraw-Hill.

MLA

Hoffman Lois, . Development of Psychology Today. New York: McGraw-Hill. 1998.