Gaya APA

Johnson, L, F. et al (1960). Methods for Studying Soil Microflora-Plant Disease Relationships (Cet. 2). Minneapolis: Burgess Publishing Company.

Gaya MLA

Johnson, Leander, F.. et al. "Methods for Studying Soil Microflora-Plant Disease Relationships". Cet. 2 Minneapolis: Burgess Publishing Company, 1960. Text.