APA Style
Nyvall,Robert F.. (1999).
Field crop diseases. (3rd. edition).
USA:
The Iowa state University Press.
Chicago Style
Nyvall,Robert F..
Field crop diseases..
3rd. edition
USA:
The Iowa state University Press,
1999.
Texts.
MLA Style
Nyvall,Robert F..
Field crop diseases..
3rd. edition
USA:
The Iowa state University Press,
1999.
Texts.
Turabian Style
Nyvall,Robert F..
Field crop diseases..
3rd. edition
USA:
The Iowa state University Press,
1999.
Texts.