Roberts, D. H., & Burke, B. F. (1981). Gravitational lenses. Technology Review (00401692), 83, 68.
Chicago Style (17th ed.) CitationRoberts, D. H., and B. F. Burke. "Gravitational Lenses." Technology Review (00401692) 83 (1981): 68.
MLA (9th ed.) CitationRoberts, D. H., and B. F. Burke. "Gravitational Lenses." Technology Review (00401692), vol. 83, 1981, p. 68.
Warning: These citations may not always be 100% accurate.