APA (7th ed.) Citation

Gilbert M. Smith, E. M. G. A textbook of general botany. The MacMillan.

Chicago Style (17th ed.) Citation

Gilbert M. Smith, Edward M. Gilbert. A Textbook of General Botany. The MacMillan.

MLA (8th ed.) Citation

Gilbert M. Smith, Edward M. Gilbert. A Textbook of General Botany. The MacMillan.

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