APA

Stevens R. E., . (19). Report on a cooperative investigation of the composition of two silicate rocks. Washington: U.S. Gov. Print Off.

Chicago

Stevens Rollin E, . 19. Report on a cooperative investigation of the composition of two silicate rocks. Washington: U.S. Gov. Print Off.

Harvard

Stevens R. E., . (19). Report on a cooperative investigation of the composition of two silicate rocks. Washington: U.S. Gov. Print Off.

MLA

Stevens Rollin E, . Report on a cooperative investigation of the composition of two silicate rocks. Washington: U.S. Gov. Print Off. 19.