45J. K. Ellwood, M. A. Gruber, G. B. M. Zerr, M. C. Stevens, A. H. Bell, H. C. Wilkes, O. W. Anthony and J. H. Drummond · The American Mathematical Monthly · 1896

Salt Tolerance in Natural Populations of Trifolium repens LN. A. Ab-Shukor, Q. O. N. Kay, D. P. Stevens and D. O. F. Skibinski · New Phytologist · 1988

Salt tolerance in natural populations of Trifolium repens L.N. A. AB-SHUKOR; Q. O. N. KAY; D. P. STEVENS; D. O. F. SKIBINSKI · 1988

THE FLORA OF NORTH DAKOTAStevens, O. A. · Science · 1918

GENERIC LIMITATIONSStevens, O. A. · Science · 1919

USES OF PLANTS BY THE INDIANSStevens, O. A. · Science · 1920

WHAT IS A WEED?Stevens, O. A. · Science · 1924

WHEAT GRAINS WITHOUT EMBRYOSSTEVENS, O. A. · Science · 1943