Παραπομπή APA

BROWN, A. W. A., BYERLY, T. C., GIBBS, M., & SAN PIETRO, A. (1975). CROP PRODUCTIVITY- RESEARCH IMPERATIVES.

Παραπομπή Chicago Style

BROWN, A W A., T C. BYERLY, M. GIBBS, και A. SAN PIETRO. CROP PRODUCTIVITY- RESEARCH IMPERATIVES. OHIO, CHARLES F KETTERING FOUNDATION YELLOW SPRINGS, 1975.

Παραπομπή MLA

BROWN, A W A., et al. CROP PRODUCTIVITY- RESEARCH IMPERATIVES. 1975.