Franklin

MLA

Bonner, W. J., and R. A Schmall. A Photometric Technique for Determining Planetary Slopes From Orbital Photographs. .

APA

Bonner, W. J., & Schmall, R. A. A photometric technique for determining planetary slopes from orbital photographs. .

Chicago

Bonner, W. J., and R. A. Schmall. A Photometric Technique for Determining Planetary Slopes From Orbital Photographs.