Παραπομπή σε μορφή APA (7η εκδ.)

Anwadike, B. C. (2015). Evaluation of the Heavy Metal Contents of Soil and Crops on a Field Treated with Ogun Rock Phosphate and Cowdung Fertilizers.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Anwadike, Benjamin Chukwumah. Evaluation of the Heavy Metal Contents of Soil and Crops on a Field Treated with Ogun Rock Phosphate and Cowdung Fertilizers. 2015.

Παραπομπή σε μορφή MLA (9th εκδ.)

Anwadike, Benjamin Chukwumah. Evaluation of the Heavy Metal Contents of Soil and Crops on a Field Treated with Ogun Rock Phosphate and Cowdung Fertilizers. 2015.