APA (7th ed.) Citation

Wester, P. J., & Hubert, A. A. Citrus Fruits in the Philippines.

Chicago Style (17th ed.) Citation

Wester, Peter Johnson, and Alexander Albert Hubert. Citrus Fruits in the Philippines.

MLA (9th ed.) Citation

Wester, Peter Johnson, and Alexander Albert Hubert. Citrus Fruits in the Philippines.

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