APA

Frost H., Saunders-Smith G., . (2000). Water as a Gas. Minnesota: Capstone Press.

Chicago

Frost Helen, Saunders-Smith Gail, . 2000. Water as a Gas. Minnesota: Capstone Press.

Harvard

Frost H., Saunders-Smith G., . (2000). Water as a Gas. Minnesota: Capstone Press.

MLA

Frost Helen, Saunders-Smith Gail, . Water as a Gas. Minnesota: Capstone Press. 2000.