APA (7th ed.) Citation

Fichte, J. G., Heath, P., & Lachs, J. (1970). Science of knowledge (Wissenschaftslehre) with the First and Second introductions. Appleton-Century-Crofts.

Chicago Style (17th ed.) Citation

Fichte, Johann Gottlieb, Peter Heath, and John Lachs. Science of Knowledge (Wissenschaftslehre) with the First and Second Introductions. New York: Appleton-Century-Crofts, 1970.

MLA (9th ed.) Citation

Fichte, Johann Gottlieb, et al. Science of Knowledge (Wissenschaftslehre) with the First and Second Introductions. Appleton-Century-Crofts, 1970.