APA (7th ed.) Citation

Schultz, W., Hajdu, G., Lampson, E., & Birnstein, R. M. (1990). W.A. Schultz, G. Hajdu, E. Lampson, R. Birnstein, P.M. Hamel. [Selbstverlag Schultz?].

Chicago Style (17th ed.) Citation

Schultz, Wolfgang-Andreas, Georg Hajdu, Elmar Lampson, and Renate M. Birnstein. W.A. Schultz, G. Hajdu, E. Lampson, R. Birnstein, P.M. Hamel. [Hamburg?]: [Selbstverlag Schultz?], 1990.

MLA (9th ed.) Citation

Schultz, Wolfgang-Andreas, et al. W.A. Schultz, G. Hajdu, E. Lampson, R. Birnstein, P.M. Hamel. [Selbstverlag Schultz?], 1990.