Behl, Y. h. (1984). Pest Management practics.: Y. Harsh Behl. Pest problems.
Cita Chicago (17th ed.)Behl, Y. harsh. Pest Management Practics.: Y. Harsh Behl. Delhi: Pest problems, 1984.
Cita MLA (9th ed.)Behl, Y. harsh. Pest Management Practics.: Y. Harsh Behl. Pest problems, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.