APA

Johnstone R. M., Court G. S., Fesser A. C., Bradley D. M., Oliphant L. W. & MacNeil J. D. (20050124). Long-term trends and sources of organochlorine contamination in Canadian tundra Peregrine Falcons, Falco peregrinus tundrius. : Environmental pollution (Barking, Essex : 1987).

Chicago

Johnstone R M, Court G S, Fesser A C, Bradley D M, Oliphant L W and MacNeil J D. 20050124. Long-term trends and sources of organochlorine contamination in Canadian tundra Peregrine Falcons, Falco peregrinus tundrius. : Environmental pollution (Barking, Essex : 1987).

Harvard

Johnstone R. M., Court G. S., Fesser A. C., Bradley D. M., Oliphant L. W. and MacNeil J. D. (20050124). Long-term trends and sources of organochlorine contamination in Canadian tundra Peregrine Falcons, Falco peregrinus tundrius. : Environmental pollution (Barking, Essex : 1987).

MLA

Johnstone R M, Court G S, Fesser A C, Bradley D M, Oliphant L W and MacNeil J D. Long-term trends and sources of organochlorine contamination in Canadian tundra Peregrine Falcons, Falco peregrinus tundrius. : Environmental pollution (Barking, Essex : 1987). 20050124.