APA (7th ed.) Citation

Kasim, M., Sudirjo, S., & Gazali, A. Spektrum. J.B. Wolters.

Chicago Style (17th ed.) Citation

Kasim, Muhammad, Sudaryati Sudirjo, and A. Gazali. Spektrum. J.B. Wolters.

MLA (8th ed.) Citation

Kasim, Muhammad, et al. Spektrum. J.B. Wolters.