APA (7th ed.) Citation

Schmidt, R. W., & Wambsganß, J. (1998). Limits on MACHOs from microlensing in the double quasar Q0957+561. Astronomy and astrophysics, 335(?), .

Chicago Style (17th ed.) Citation

Schmidt, Robert W., and Joachim Wambsganß. "Limits on MACHOs from Microlensing in the Double Quasar Q0957+561." Astronomy and Astrophysics 335, no. ? (1998).

MLA (9th ed.) Citation

Schmidt, Robert W., and Joachim Wambsganß. "Limits on MACHOs from Microlensing in the Double Quasar Q0957+561." Astronomy and Astrophysics, vol. 335, no. ?, 1998.