APA Edition Citation

Portch, S., & Hunter,Arvel. Systematic Approach to Soil Fertility Evaluation and Improvement. Modern Agriculture and Fertilizers.

Chicago Edition Citation

Portch, Sam, and Hunter,Arvel. Systematic Approach to Soil Fertility Evaluation and Improvement. China: Modern Agriculture and Fertilizers.

MLA Edition Citation

Portch, Sam, and Hunter,Arvel. Systematic Approach to Soil Fertility Evaluation and Improvement. Modern Agriculture and Fertilizers.

Warning: These citations may not always be 100% accurate.