Παραπομπή APA

SPARKS, D. L. (2001). ADVANCES IN AGRONOMY: V-73.

Παραπομπή Chicago Style

SPARKS, DONALD L. ADVANCES IN AGRONOMY: V-73. NEW YORK, ACADEMIC PRESS, 2001.

Παραπομπή MLA

SPARKS, DONALD L. ADVANCES IN AGRONOMY: V-73. 2001.