APA

Howlett M., Ramesh M. & Perl A.Studying public policy : principles and processes. Don Mills : Oxford university press, 2020: .

Chicago

Howlett Michael, Ramesh M and Perl Anthony.Studying public policy : principles and processes. Don Mills : Oxford university press, 2020: .

Harvard

Howlett M., Ramesh M. and Perl A.Studying public policy : principles and processes. Don Mills : Oxford university press, 2020: .

MLA

Howlett Michael, Ramesh M and Perl Anthony.Don Mills : Oxford university press, 2020: . .