APA

Fitzgibbon J., . (1980). Snow removal. : North American Snow Conference, 20th.

Chicago

Fitzgibbon J, . 1980. Snow removal. : North American Snow Conference, 20th.

Harvard

Fitzgibbon J., . (1980). Snow removal. : North American Snow Conference, 20th.

MLA

Fitzgibbon J, . Snow removal. : North American Snow Conference, 20th. 1980.