Cita APA (7a ed.)

Boquiren, R. E., Lavega, R. P., & Era, A. P. (1999). Papain production. College of Engineering.

Cita Chicago Style (17a ed.)

Boquiren, Randifer E., Rhamses P. Lavega, y Allain P. Era. Papain Production. Diliman, Quezon City: College of Engineering, 1999.

Cita MLA (9a ed.)

Boquiren, Randifer E., et al. Papain Production. College of Engineering, 1999.