APA
Powell E. F. W., . (1970). Health from earth, air and water. Health Science Press, Rustington: .
Chicago
Powell Eric F W, . 1970. Health from earth, air and water. Health Science Press, Rustington: .
Harvard
Powell E. F. W., . (1970). Health from earth, air and water. Health Science Press, Rustington: .
MLA
Powell Eric F W, . Health from earth, air and water. Health Science Press, Rustington: . 1970.