APA (7th ed.) Citation

Velasco, J. R., Asis, C. V., & De Padua, L. S. (1998). Economic plants. Island Publishing House.

Chicago Style (17th ed.) Citation

Velasco, Jose R., Consuelo V. Asis, and Ludivina S. De Padua. Economic Plants. Manila: Island Publishing House, 1998.

MLA (9th ed.) Citation

Velasco, Jose R., et al. Economic Plants. Island Publishing House, 1998.