1. AOAC (2000a) Fat (crude) or ether extract in meat. AOAC official methods 960.39: Gaithersburg, MD, USA
2. AOAC (2000b) Determination of lead, calcium, copper, iron, zinc, sodium, magnesium, phosphorus, potassium, manganese in food. AOAC official methods 999.11: Gaithersburg, MD, USA
3. AOAC (2005a) Ash of flour. AOAC official methods 923.03: Gaithersburg, MD, USA
4. AOAC (2005b) Nitrogen (total) in fertilizers. AOAC official methods 955.04: Gaithersburg, MD, USA
5. AOAC (2005c) Fiber (crude) in animal feed and pet food. AOAC official methods 962.09: Gaithersburg, MD, USA