MLA

Ostman, Ronald E, and Jill L Parker. Impact of Education, Age, Newspapers and Television On Environmental Knowledge, Concerns and Behaviors. USA, 1987.

APA

Ostman, R. E, & Parker, J. L. (1987). Impact of education, age, newspapers and television on environmental knowledge, concerns and behaviors. USA.

Chicago

Ostman, Ronald E., and Jill L Parker. Impact of Education, Age, Newspapers and Television On Environmental Knowledge, Concerns and Behaviors. USA, 1987.