APA
Reiz A., Petersen J. O. & Hejlesen P. M. (1968). A preliminary calibration of the Hertzsprung-Russell diagram in terms of mass and age for population I main sequence stars of 1.0 - 1.6 solar masses. København: Munksgaard [in Komm.].
Chicago
Reiz Anders, Petersen Jørgen Otzen and Hejlesen P M. 1968. A preliminary calibration of the Hertzsprung-Russell diagram in terms of mass and age for population I main sequence stars of 1.0 - 1.6 solar masses. København: Munksgaard [in Komm.].
Harvard
Reiz A., Petersen J. O. and Hejlesen P. M. (1968). A preliminary calibration of the Hertzsprung-Russell diagram in terms of mass and age for population I main sequence stars of 1.0 - 1.6 solar masses. København: Munksgaard [in Komm.].
MLA
Reiz Anders, Petersen Jørgen Otzen and Hejlesen P M. A preliminary calibration of the Hertzsprung-Russell diagram in terms of mass and age for population I main sequence stars of 1.0 - 1.6 solar masses. København: Munksgaard [in Komm.]. 1968.