Gilbert, D. (1972). Breaking the world barrier. Prentice-Hall.
Chicago Style (17th ed.) CitationGilbert, Doris. Breaking the World Barrier. Englewood Cliffs, N. J: Prentice-Hall, 1972.
MLA (9th ed.) CitationGilbert, Doris. Breaking the World Barrier. Prentice-Hall, 1972.
Warning: These citations may not always be 100% accurate.