APA

Metzger G., . (2015). Act or Perish! A Retrospective. : .

Chicago

Metzger Gustav, . 2015. Act or Perish! A Retrospective. : .

Harvard

Metzger G., . (2015). Act or Perish! A Retrospective. : .

MLA

Metzger Gustav, . Act or Perish! A Retrospective. : . 2015.