Παραπομπή APA

Hilder, R., Herbert, B., & O'Riordan, J. (1966). Starting with watercolour. Studio Vista.

Παραπομπή Chicago Style

Hilder, Rowland, Brenda Herbert, και Janey O'Riordan. Starting with Watercolour. London: Studio Vista, 1966.

Παραπομπή MLA

Hilder, Rowland, et al. Starting with Watercolour. Studio Vista, 1966.