APA استشهاد

Nitrogen nutrion and plant growth. (1999). Nitrogen nutrion and plant growth. Enfield, New Hampshire: Science.

استشهاد بنمط شيكاغو

Nitrogen nutrion and plant growth. Nitrogen Nutrion and Plant Growth. Enfield, New Hampshire: Science, 1999.

MLA استشهاد

Nitrogen nutrion and plant growth. Nitrogen Nutrion and Plant Growth. Enfield, New Hampshire: Science, 1999.

تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.