APA

Harvey R., . (1981). Highway to meet and retain its environment and habitat. : IRF World Meeting IX Stockholm, 1-5 June 1981.

Chicago

Harvey R, . 1981. Highway to meet and retain its environment and habitat. : IRF World Meeting IX Stockholm, 1-5 June 1981.

Harvard

Harvey R., . (1981). Highway to meet and retain its environment and habitat. : IRF World Meeting IX Stockholm, 1-5 June 1981.

MLA

Harvey R, . Highway to meet and retain its environment and habitat. : IRF World Meeting IX Stockholm, 1-5 June 1981. 1981.