Citazione APA

Brown L Barbara & Stanley B Brown. (1972). Realm of science. V. 20: Directions and dimensions of life: ecology, man and nature. Kentucky.

Stile di citazione Chicago

Brown L Barbara e Stanley B Brown. Realm of Science. V. 20: Directions and Dimensions of Life: Ecology, Man and Nature. Kentucky, 1972.

Citazione MLA

Brown L Barbara e Stanley B Brown. Realm of Science. V. 20: Directions and Dimensions of Life: Ecology, Man and Nature. Kentucky, 1972.