APA

"Goetz (Philip W) E., . (1985). The New Encyclopaedia Britannica Vol.20. : .

Chicago

"Goetz (Philip W) Ed.", . 1985. The New Encyclopaedia Britannica Vol.20. : .

Harvard

"Goetz (Philip W) E., . (1985). The New Encyclopaedia Britannica Vol.20. : .

MLA

"Goetz (Philip W) Ed.", . The New Encyclopaedia Britannica Vol.20. : . 1985.