APA (7e ed.) Bronvermelding

El-Gendi, S., & Hassan, A. (1969). Solution of Variational Problems with Bounded Control Variables. The Institute of National Planning.

Chicago (17e ed.) Bronvermelding

El-Gendi, Slah, en Ahmed Hassan. Solution of Variational Problems with Bounded Control Variables. Cairo: The Institute of National Planning, 1969.

MLA (9e ed.) Bronvermelding

El-Gendi, Slah, en Ahmed Hassan. Solution of Variational Problems with Bounded Control Variables. The Institute of National Planning, 1969.

Let op: Deze citaties zijn niet altijd 100% accuraat.