APA (7th ed.) Citation

Sierp, A. (1969). An advanced course in geometrical drawing (9th ed.). Sands & McDougall.

Chicago Style (17th ed.) Citation

Sierp, Allan. An Advanced Course in Geometrical Drawing. 9th ed. Adelaide, Australia: Sands & McDougall, 1969.

MLA (9th ed.) Citation

Sierp, Allan. An Advanced Course in Geometrical Drawing. 9th ed. Sands & McDougall, 1969.

Warning: These citations may not always be 100% accurate.