Παραπομπή APA

Toole, G., & Toole, S. (1999). Understanding biology for advanced level (4th ed.). Cheltenham: Stanley Thornes Publishers.

Παραπομπή Chicago Style

Toole, Glenn, and Susan Toole. Understanding Biology for Advanced Level. 4th ed. Cheltenham: Stanley Thornes Publishers, 1999.

Παραπομπή MLA

Toole, Glenn, and Susan Toole. Understanding Biology for Advanced Level. 4th ed. Cheltenham: Stanley Thornes Publishers, 1999.

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